Name
Daily Spiral Review
Choose the best answer.
1. Which is the word form of 604?
Sixty-four
B
Four hundred six
C
Six hundred four
D
Six hundred forty
A $0.75
C $0.85
B $0.80
D $0.90
3. What is the value of the 7 in
275,342?
A 7
C 7,000
B 700
D 70,000
4. Which of the following is the
number of faces that a cube has?
6. Write 300,000 ! 50,000 ! 2,000
! 100 ! 80 ! 4 in standard form.
2-1
2. Danny has 2 quarters, 2 dimes,
and 3 nickels. What is the total
value of Danny’s coins?
5. Write fifty-eight thousand, one
hundred sixty in standard form.
Daily Spiral Review
A
2-1
7. Last week, 25 third-grade
students and 16 fourth-grade
students went on a field trip. How
many more third-grade students
than fourth-grade students went
on the field trip?
8. Order the numbers from least to
greatest.
3,952; 3,529; 3,925; 3,592
9. What number is missing in the
pattern below?
7, 14, 21, 28, ______, 42
C 5
B 6
D 4
© Pearson Education, Inc. 3
A 7
Topic 2
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31
1/16/08 4:48:13 PM
Name
Daily Spiral Review
2-1
Choose the best answer.
1. Which is the word form of 604?
Sixty-four
B
Four hundred six
C
Six hundred four
D
Six hundred forty
A $0.75
C $0.85
B $0.80
D $0.90
3. What is the value of the 7 in
275,342?
A 7
C 7,000
B 700
D 70,000
4. Which of the following is the
number of faces that a cube has?
6. Write 300,000 ! 50,000 ! 2,000
! 100 ! 80 ! 4 in standard form.
352,184
2-1
2. Danny has 2 quarters, 2 dimes,
and 3 nickels. What is the total
value of Danny’s coins?
58,160
Daily Spiral Review
A
5. Write fifty-eight thousand, one
hundred sixty in standard form.
7. Last week, 25 third-grade
students and 16 fourth-grade
students went on a field trip. How
many more third-grade students
than fourth-grade students went
on the field trip?
9
8. Order the numbers from least to
greatest.
3,952; 3,529; 3,925; 3,592
3,529; 3,592;
3,925; 3,952
9. What number is missing in the
pattern below?
35
7, 14, 21, 28, ______, 42
C 5
B 6
D 4
© Pearson Education, Inc. 3
A 7
Topic 2
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31
3/14/08 1:01:45 PM
32
28421_031_048.indd 32
Problem of the Day 2-1
Topic 2
Problem
of the
Day
2-1
2-1
1/16/08 4:48:15 PM
© Pearson Education, Inc. 3
Problem of the Day
Using only the digits 0, 5, 8, and 9,
write all possible 4-digit numbers
that are greater than 9,000. Each
digit can only be used once in
each number.
(Hint: Make an organized list.)
Name
Quick Check
2-1
1. Which number goes into the ☐ to make the number
sentence true?
5 ! (3 ! ☐) " (2 ! 3) ! 5
A 2
B 5
Quick Check 2-1
C 8
D 10
2. Which number sentence is modeled on the number line?
6
0
1
2
3
7
4
5
6
7
8
9
10
11
12
13
14
A 6!1"7
B 0!6"6
C 6 ! 6 " 12
D 6 ! 7 " 13
3. Which number sentence matches the picture?
A 4!4"8
B 4 ! 8 " 12
C 8#4"4
D 12 ! 4 " 16
© Pearson Education, Inc. 3
4. Writing to Explain What does it mean to add 5 and 0?
Draw a picture and explain how to find the sum.
Topic 2
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33
1/16/08 4:48:16 PM
Name
Quick Check
2-1
1. Which number goes into the ☐ to make the number
sentence true?
5 ! (3 ! ☐) " (2 ! 3) ! 5
A 2
B 5
Quick Check 2-1
C 8
D 10
2. Which number sentence is modeled on the number line?
6
0
1
2
3
7
4
5
6
7
8
9
10
11
12
13
14
A 6!1"7
B 0!6"6
C 6 ! 6 " 12
D 6 ! 7 " 13
3. Which number sentence matches the picture?
A 4!4"8
B 4 ! 8 " 12
C 8#4"4
D 12 ! 4 " 16
4. Writing to Explain What does it mean to add 5 and 0?
Draw a picture and explain how to find the sum.
© Pearson Education, Inc. 3
See students’ samples at the right.
Topic 2
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33
3/14/08 1:01:48 PM
Name
Reteaching
2-1
Addition Meaning and
Properties
The Commutative (Order) Property
Reteaching 2-1
You can add numbers in any order, and the sum will be the same.
6!2"8
2!6"8
The Associative (Grouping) Property
You can group addends in any way, and the sum will be the same.
!
!
(3 ! 4) ! 1 " 8
3 ! (4 ! 1) " 8
The Identity (Zero) Property
The sum of any number and zero equals that same number.
0!4"4
Find each sum.
1. 3 ! (2 ! 4) "
2. (0 ! 5) ! 2 "
3. (8 ! 3) ! 4 "
4. 9 ! 2 ! 6 "
Write each missing number.
7. (2 ! 3) ! 4 "
6.
! (2 ! 4)
8. 9 ! (2 ! 7) " (9 ! 2) !
9. Reasoning Does (4 ! 5 ) ! 2 " 9 ! 2? Explain.
34
28421_031_048.indd 34
!7"7
© Pearson Education, Inc. 3
5. 3 ! 4 " 4 !
Topic 2
1/16/08 4:48:18 PM
Name
Reteaching
2-1
Addition Meaning and
Properties
The Commutative (Order) Property
Reteaching 2-1
You can add numbers in any order, and the sum will be the same.
6!2"8
2!6"8
The Associative (Grouping) Property
You can group addends in any way, and the sum will be the same.
!
!
(3 ! 4) ! 1 " 8
3 ! (4 ! 1) " 8
The Identity (Zero) Property
The sum of any number and zero equals that same number.
0!4"4
Find each sum.
3. (8 ! 3) ! 4 "
9
15
2. (0 ! 5) ! 2 "
4. 9 ! 2 ! 6 "
Write each missing number.
5. 3 ! 4 " 4 !
7. (2 ! 3) ! 4 "
3
3
6.
! (2 ! 4)
0
7
17
!7"7
8. 9 ! (2 ! 7) " (9 ! 2) !
9. Reasoning Does (4 ! 5 ) ! 2 " 9 ! 2? Explain.
7
(4 ! 5) ! 2 has the same sum as 9 ! 2.
Both equal 11.
34
28421_031_048.indd 34
© Pearson Education, Inc. 3
1. 3 ! (2 ! 4) "
Topic 2
3/14/08 1:01:50 PM
Name
Practice
2-1
Addition Meaning
and Properties
Write each missing number.
2. 3 ! ■ " 3
3. (2 ! 4) ! 5 " 2 ! (■ ! 5)
4. 3 ! ■ " 5 ! 3
5. ■ ! 0 " 6
6. (5 ! 3) ! 9 " 8 ! ■
Practice 2-1
1. 7 ! 2 " 2 ! ■
7. Reasoning What property of addition is shown in the
following number sentence? Explain.
7 ! (3 + 5) " (7 + 3) ! 5
8. Number Sense Minnie has 6 country CDs and 5 rock CDs.
Amanda has 5 rock CDs and 6 country CDs.
Who has more CDs? Explain.
9. Show how the Commutative Property of Addition works
using the numbers 2, 3, and 5.
© Pearson Education, Inc. 3
10. Explain It Jake says that adding 0 does not change a sum.
Is he correct? Explain.
11. Which property of addition is shown by 5 ! 2 " 2 ! 5?
A Associative Property
C Commutative Property
B Distributive Property
D Identity Property
Topic 2
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35
1/16/08 4:48:19 PM
Name
Practice
2-1
Addition Meaning
and Properties
Write each missing number.
1. 7 ! 2 " 2 ! ■
2. 3 ! ■ " 3
3. (2 ! 4) ! 5 " 2 ! (■ ! 5)
4. 3 ! ■ " 5 ! 3
5. ■ ! 0 " 6
6. (5 ! 3) ! 9 " 8 ! ■
7
6
4
Practice 2-1
5
0
9
7. Reasoning What property of addition is shown in the
following number sentence? Explain.
7 ! (3 + 5) " (7 + 3) ! 5
The Associative Property of Addition; The way the
addends are grouped does not change a sum.
8. Number Sense Minnie has 6 country CDs and 5 rock CDs.
Amanda has 5 rock CDs and 6 country CDs.
Who has more CDs? Explain.
Minnie and Amanda have the same
number of CDs because 6 ! 5 " 5 ! 6.
9. Show how the Commutative Property of Addition works
using the numbers 2, 3, and 5.
2 ! 3 " 5 and 3 ! 2 " 5
© Pearson Education, Inc. 3
10. Explain It Jake says that adding 0 does not change a sum.
Is he correct? Explain.
Yes. The sum of an addend and
0 is the addend.
11. Which property of addition is shown by 5 ! 2 " 2 ! 5?
A Associative Property
C Commutative Property
B Distributive Property
D Identity Property
Topic 2
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35
3/14/08 1:01:51 PM
Name
Enrichment
2-1
Add It Up
Tell whether you use the Commutative (Order) Property, the
Associative (Grouping) Property, or the Identity (Zero) Property.
Explain your answer. Then solve.
Enrichment 2-1
1.
?
! 14 " 14. You use the
. The solution is
2. (10 + 9) ! 8 "
because
The solution is
?
Reasoning
Property because
.
! (9 ! 8). You use the
Property
.
3. How can you write 9 ! 13 using 9 and two other addends?
Find the sum and explain your answer.
© Pearson Education, Inc. 3
4. Use two different addends to write a problem that has the same sum as
9 ! 13. Explain your answer.
36
28421_031_048.indd 36
Topic 2
1/16/08 4:48:20 PM
Name
Enrichment
Add It Up
Tell whether you use the Commutative (Order) Property, the
Associative (Grouping) Property, or the Identity (Zero) Property.
Explain your answer. Then solve.
Enrichment 2-1
1.
2.
2-1
Reasoning
Identity Property because
any number added to zero is that
number . The solution is 0 .
(10 + 9) ! 8 " ? ! (9 ! 8). You use the Associative Property
?
! 14 " 14. You use the
because
the order does not matter; The
addends add to the same amount.
The solution is 10 .
3. How can you write 9 ! 13 using 9 and two other addends?
Find the sum and explain your answer.
Students’ answers should include 9 and
two other addends that have a sum of 13.
4. Use two different addends to write a problem that has the same sum as
9 ! 13. Explain your answer.
© Pearson Education, Inc. 3
Sample answer: 7 ! 15 " 22; Students’
answers should include any two
addends that have a sum of 22.
36
28421_031_048.indd 36
Topic 2
3/14/08 1:01:53 PM
Name
Daily Spiral Review
2-2
Choose the best answer.
1. Which is the standard form of two
hundred thousand, six hundred
ninety-nine?
A 269,600
B 209,699
C 206,690
D 200,699
B 55
C 70
D 73
3. Which unit would you use to
measure the length of your
classroom?
A Pound
In 5–7, compare the heights of the two
trees. Use !, ", or #.
5. Giant sequoia
6. Sugar pine
Coast redwood
2-2
A 53
National Champion Trees
Tree
Height (in ft)
Giant sequoia
275
Sugar pine
232
Coast Douglas fir
281
Port Orford cedar
219
Coast redwood
321
Daily Spiral Review
2. Darren has 50 baseball cards and
23 football cards. What is the total
number of cards Darren has?
Use the table for 5 through 8.
Port Orford cedar
7. Coast Douglas fir
Coast
redwood
8. What is the height of a tree that
has a greater height than a giant
sequoia but less than a coast
Douglas fir?
B Foot
feet
C Gallon
D Degree
4. Which number has the greatest
value?
A 5,445
© Pearson Education, Inc. 3
B 4,455
C 5,544
D 4,554
Topic 2
28421_031_048.indd 37
37
1/16/08 4:48:22 PM
Name
Daily Spiral Review
2-2
Choose the best answer.
1. Which is the standard form of two
hundred thousand, six hundred
ninety-nine?
A 269,600
B 209,699
C 206,690
D 200,699
B 55
C 70
D 73
3. Which unit would you use to
measure the length of your
classroom?
A Pound
B Foot
C Gallon
In 5–7, compare the heights of the two
trees. Use !, ", or #.
5. Giant sequoia
6. Sugar pine
>
<
Coast redwood
2-2
A 53
National Champion Trees
Tree
Height (in ft)
Giant sequoia
275
Sugar pine
232
Coast Douglas fir
281
Port Orford cedar
219
Coast redwood
321
Daily Spiral Review
2. Darren has 50 baseball cards and
23 football cards. What is the total
number of cards Darren has?
Use the table for 5 through 8.
Port Orford cedar
7. Coast Douglas fir
<
Coast
redwood
8. What is the height of a tree that
has a greater height than a giant
sequoia but less than a coast
Douglas fir?
Accept 276–280 feet
D Degree
4. Which number has the greatest
value?
A 5,445
© Pearson Education, Inc. 3
B 4,455
C 5,544
D 4,554
Topic 2
28421_031_048.indd 37
37
3/14/08 1:01:54 PM
38
28421_031_048.indd 38
Problem of the Day 2-2
Topic 2
Problem
of the
Day
2-2
2-2
1/16/08 4:48:23 PM
© Pearson Education, Inc. 3
Problem of the Day
Find each missing number.
+6=6+3
0+ =8
(7 + 2) + = 13
( + 2) + 3 = 6 + (2 + 3)
7 + (2 + 4) = 7 +
Name
Quick Check
2-2
Use the hundred chart to solve 1 and 2.
1. Omar had 48 postcards. His brother
gave him 13 more postcards. How many
postcards does Omar have in all?
A 62
B 61
1
2
3
4
5
6
7
8
9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
D 59
61 62 63 64 65 66 67 68 69 70
2. Mina is 16 years old. How old will she be
25 years from now?
A 9
Quick Check 2-2
C 60
71 72 73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99 100
B 36
C 41
D 46
© Pearson Education, Inc. 3
3. Writing to Explain Describe the steps you would use to add
57 ! 29 on a hundred chart. Tell how to use the rows to find
the sum.
Topic 2
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39
1/16/08 4:48:24 PM
Name
Quick Check
2-2
Use the hundred chart to solve 1 and 2.
1. Omar had 48 postcards. His brother
gave him 13 more postcards. How many
postcards does Omar have in all?
A 62
B 61
1
2
3
4
5
6
7
8
9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
D 59
61 62 63 64 65 66 67 68 69 70
2. Mina is 16 years old. How old will she be
25 years from now?
A 9
Quick Check 2-2
C 60
71 72 73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99 100
B 36
C 41
D 46
3. Writing to Explain Describe the steps you would use to add
57 ! 29 on a hundred chart. Tell how to use the rows to find
the sum.
© Pearson Education, Inc. 3
See students’ samples at the right.
Topic 2
28421_031_048.indd 39
39
3/14/08 1:01:56 PM
Name
Reteaching
2-2
Adding on a Hundred Chart
Reteaching 2-2
You can use a hundred chart to add.
To add 37 ! 26, follow these steps:
• Start at 37.
• Go down 2 rows to add 20.
• Go right 3 spaces to add 3 more.
So far you have added 20 ! 3, or 23.
• To add 3 more, go down to the next row
and go right 3 spaces.
• You end at 63.
1
2
3
4
5
6
7
8
9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88 89 90
So, 37 ! 26 " 63.
91 92 93 94 95 96 97 98 99 100
1
2
3
4
5
6
7
8
9 10
11 12 13 14 15 16 17 18 19 20
You could also do it this way:
• Start at 37.
• Go down 3 rows to add 30.
• Go left 4 spaces to subtract 4.
• You end at 63.
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80
So, 37 ! 26 " 63
81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99 100
1. 30 ! 45
2. 52 ! 40
3. 26 ! 43
4. 37 ! 23
5. 28 ! 45
6. 47 ! 18
7. 39 ! 35
8. 26 ! 54
9. Reasoning To find 38 ! 45, you could first find 38 ! 50 " 88.
Then what should you do?
40
28421_031_048.indd 40
© Pearson Education, Inc. 3
Use a hundred chart to add.
Topic 2
1/16/08 4:48:26 PM
Name
Reteaching
2-2
Adding on a Hundred Chart
Reteaching 2-2
You can use a hundred chart to add.
To add 37 ! 26, follow these steps:
• Start at 37.
• Go down 2 rows to add 20.
• Go right 3 spaces to add 3 more.
So far you have added 20 ! 3, or 23.
• To add 3 more, go down to the next row
and go right 3 spaces.
• You end at 63.
1
2
3
4
5
6
7
8
9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88 89 90
So, 37 ! 26 " 63.
91 92 93 94 95 96 97 98 99 100
1
2
3
4
5
6
7
8
9 10
11 12 13 14 15 16 17 18 19 20
You could also do it this way:
• Start at 37.
• Go down 3 rows to add 30.
• Go left 4 spaces to subtract 4.
• You end at 63.
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80
So, 37 ! 26 " 63
81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99 100
Use a hundred chart to add.
2. 52 ! 40
75
5. 28 ! 45
92
6. 47 ! 18
73
65
3. 26 ! 43
4. 37 ! 23
69
7. 39 ! 35
74
60
8. 26 ! 54
9. Reasoning To find 38 ! 45, you could first find 38 ! 50 " 88.
Then what should you do?
40
28421_031_048.indd 40
Subtract 5
80
© Pearson Education, Inc. 3
1. 30 ! 45
Topic 2
3/14/08 1:01:58 PM
Name
Practice
2-2
Adding on a Hundred Chart
Use a hundred chart to add.
1. 45 ! 30
1
2
3
4
5
6
8
7
9 10
11 12 13 14 15 16 17 18 19 20
2. 36 ! 33
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
3. 52 ! 46
41 42 43 44 45 46 47 48 49 50
4. 27 ! 23
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80
6. 49 ! 24
81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99 100
Practice 2-2
5. 36 ! 45
Number Sense Compare. Use ", #, or $.
7. 32 ! 40
42 ! 38
8. 27 ! 52
52 ! 27
9. 46 ! 34
33 ! 45
10. 22 ! 54
28 ! 48
11. 37 ! 44
32 ! 50
12. 51 ! 25
41 ! 25
13. Number Sense Mickey lives 35 miles away from
his grandparents’ home. His Aunt Roz lives
24 miles farther than his grandparents. How
far does Mickey live from his Aunt Roz?
14. Kirsten spent 45 minutes doing her math homework
and 35 minutes studying for science class. How
much time did Kirsten spend studying all together?
15. Which addition problem has a sum of 65?
B 46 ! 29
C 34 ! 32
D 27 ! 39
© Pearson Education, Inc. 3
A 37 ! 28
Topic 2
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41
1/16/08 4:48:27 PM
Name
Practice
2-2
Adding on a Hundred Chart
Use a hundred chart to add.
1. 45 ! 30
1
69
3. 52 ! 46
61 62 63 64 65 66 67 68 69 70
81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99 100
9. 46 ! 34
11. 37 ! 44
42 ! 38
8. 27 ! 52
33 ! 45
10. 22 ! 54
32 ! 50
12. 51 ! 25
=
=
>
Practice 2-2
71 72 73 74 75 76 77 78 79 80
73
<
>
<
9 10
51 52 53 54 55 56 57 58 59 60
Number Sense Compare. Use ", #, or $.
7. 32 ! 40
8
7
41 42 43 44 45 46 47 48 49 50
6. 49 ! 24
81
6
31 32 33 34 35 36 37 38 39 40
50
5. 36 ! 45
5
21 22 23 24 25 26 27 28 29 30
4. 27 ! 23
98
4
11 12 13 14 15 16 17 18 19 20
2. 36 ! 33
75
3
2
52 ! 27
28 ! 48
41 ! 25
13. Number Sense Mickey lives 35 miles away from
his grandparents’ home. His Aunt Roz lives
24 miles farther than his grandparents. How
far does Mickey live from his Aunt Roz?
59 miles
14. Kirsten spent 45 minutes doing her math homework
and 35 minutes studying for science class. How
much time did Kirsten spend studying all together?
80 minutes
15. Which addition problem has a sum of 65?
B 46 ! 29
C 34 ! 32
D 27 ! 39
© Pearson Education, Inc. 3
A 37 ! 28
Topic 2
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41
3/14/08 1:01:59 PM
Name
Enrichment
2-2
Egyptian Addition
More than 5,000 years ago ancient
Egyptians used a number system
that was based on the number ten!
Some of the symbols they used are
shown at the right.
"
! 10
! 100
!
Write each number using our number system.
Then find each sum and draw the sum using Egyptian symbols.
1.
2.
3.
4.
42
28421_031_048.indd 42
"
!
"
!
"
!
"
!
"
!
"
!
"
!
"
!
© Pearson Education, Inc. 3
Enrichment 2-2
Here is how the Egyptians would
have written 15 " 26 ! 41.
Mental Math
!1
Topic 2
1/16/08 4:48:29 PM
Name
Enrichment
2-2
Egyptian Addition
More than 5,000 years ago ancient
Egyptians used a number system
that was based on the number ten!
Some of the symbols they used are
shown at the right.
! 10
! 100
Here is how the Egyptians would
have written 15 " 26 ! 41.
"
!
Write each number using our number system.
Then find each sum and draw the sum using Egyptian symbols.
1.
"
23
2.
3.
"
4.
"
57
"
65
!
92
!
26
"
58
!
!
"
48
28421_031_048.indd 42
42
"
35
42
"
!
!
74
!
44
!
102
© Pearson Education, Inc. 3
Enrichment 2-2
Mental Math
!1
Topic 2
3/14/08 1:02:00 PM
Name
Daily Spiral Review
2-3
Choose the best answer.
1. Which number below in standard
form do these blocks show?
A 1,236
C 2,136
B 1,326
D 2,236
B 6!0"6
C 5!9"9!5
D (3 ! 2) ! 8 " 3 ! (2 ! 8)
3. What is the missing number?
5 ! (7 ! 3) " 5 ! (3 ! ■)
A 15
C 5
B 7
D 3
1,250
1,500
1,750
6. Order the numbers from greatest
to least.
4,392; 3,999; 4,401
2-3
A 7 ! 6 " 13
1,000
Daily Spiral Review
2. Which is an example of the
Commutative (Order) Property
of Addition?
5. Fill in 1,655; 1,100; and 1,350
where they should be on the
number line.
7. There are 15 girls and 11 boys
in Mr. Gittens’s class. How many
students does Mr. Gittens have all
together?
8. Which property of addition is
shown below?
0!7"7
4. Miguel is going to eat an orange.
Which of the following is the best
estimate of how long it will take
Miguel to eat the orange?
A 2 days
B 2 hours
© Pearson Education, Inc. 3
C 2 minutes
D 2 seconds
Topic 2
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1/16/08 4:48:30 PM
Name
Daily Spiral Review
2-3
Choose the best answer.
1. Which number below in standard
form do these blocks show?
5. Fill in 1,655; 1,100; and 1,350
where they should be on the
number line.
1,350
1,100
1,655
A 1,236
C 2,136
B 1,326
D 2,236
B 6!0"6
C 5!9"9!5
D (3 ! 2) ! 8 " 3 ! (2 ! 8)
3. What is the missing number?
5 ! (7 ! 3) " 5 ! (3 ! ■)
A 15
C 5
B 7
D 3
4. Miguel is going to eat an orange.
Which of the following is the best
estimate of how long it will take
Miguel to eat the orange?
1,500
1,750
6. Order the numbers from greatest
to least.
4,392; 3,999; 4,401
4,401; 4,392;
3,999
2-3
A 7 ! 6 " 13
1,250
Daily Spiral Review
2. Which is an example of the
Commutative (Order) Property
of Addition?
1,000
7. There are 15 girls and 11 boys
in Mr. Gittens’s class. How many
students does Mr. Gittens have all
together?
26
8. Which property of addition is
shown below?
0!7"7
Identity Property
of Addition or
Zero Property of
Addition
A 2 days
B 2 hours
© Pearson Education, Inc. 3
C 2 minutes
D 2 seconds
Topic 2
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43
3/14/08 1:02:02 PM
44
28421_031_048.indd 44
Problem of the Day 2-3
Topic 2
Problem
of the
Day
2-3
2-3
1/16/08 4:48:32 PM
© Pearson Education, Inc. 3
Problem of the Day
Tell what information is not needed.
Then solve using a hundred chart.
Matt caught 12 fireflies, Jason
caught 14 fireflies, and Kenan
caught 8 grasshoppers. How many
fireflies did the boys catch?
Name
Quick Check
2-3
1. Use breaking apart to add 36 ! 24. Which expression does
NOT show a correct way to do this?
A 3!6!2!4
B 30 ! 6 ! 20 ! 4
C 36 ! 20 ! 4
D 30 ! 20 ! 6 ! 4
2. Use mental math to find the sum.
57 ! 18 " ■
Quick Check 2-3
A 65
B 69
C 75
D 86
3. Lorna is playing a game. She gets 13 points on her first turn.
She gets 17 points on her second turn. Use mental math to
find her score so far.
A 31
B 30
C 29
D 20
© Pearson Education, Inc. 3
4. Writing to Explain You have learned about the Associative
(Grouping) Property of Addition. It says that you can group
addends in any way and the sum will be the same. How
do you use the Grouping Property when you break apart
addends? Give an example.
Topic 2
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45
1/16/08 4:48:33 PM
Name
Quick Check
2-3
1. Use breaking apart to add 36 ! 24. Which expression does
NOT show a correct way to do this?
A 3!6!2!4
B 30 ! 6 ! 20 ! 4
C 36 ! 20 ! 4
D 30 ! 20 ! 6 ! 4
2. Use mental math to find the sum.
57 ! 18 " ■
Quick Check 2-3
A 65
B 69
C 75
D 86
3. Lorna is playing a game. She gets 13 points on her first turn.
She gets 17 points on her second turn. Use mental math to
find her score so far.
A 31
B 30
C 29
D 20
4. Writing to Explain You have learned about the Associative
(Grouping) Property of Addition. It says that you can group
addends in any way and the sum will be the same. How
do you use the Grouping Property when you break apart
addends? Give an example.
© Pearson Education, Inc. 3
See students’ samples at the right.
Topic 2
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45
3/14/08 1:02:05 PM
Name
Reteaching
2-3
Using Mental Math to Add
You can break apart numbers to make them easier to add mentally.
Add 31 ! 45 by breaking apart
numbers.
Add 26 ! 17 by breaking apart
numbers to make a ten.
Break the numbers into tens
and ones.
Use a number that adds with
the 6 in 26 to make a 10.
Since 6 ! 4 " 10, use 4.
Reteaching 2-3
tens
ones
31 "
30
!
1
45 "
40
!
5
Think: 17 " 4 ! 13.
Add 26 ! 4 " 30.
Add 30 ! 13 " 43.
Add the tens: 30 ! 40 " 70.
So, 26 ! 17 " 43.
Add the ones: 1 ! 5 " 6.
Add the sums: 70 ! 6 " 76.
So, 31 ! 45 " 76.
Find each sum using mental math.
1. 24 ! 71 "
2. 36 ! 43 "
3. 54 ! 23 "
4. 25 ! 49 "
5. 37 ! 56 "
6. 77 ! 13 "
7. Number Sense To add 32 ! 56, Juanita first added 30 ! 50.
What two steps does she still need to do to find the sum?
What is Juanita’s sum?
© Pearson Education, Inc. 3
8. Reasoning How can Steve add 48 ! 34 by making a ten?
What is the sum?
46
28421_031_048.indd 46
Topic 2
1/16/08 4:48:35 PM
Name
Reteaching
2-3
Using Mental Math to Add
You can break apart numbers to make them easier to add mentally.
Add 31 ! 45 by breaking apart
numbers.
Add 26 ! 17 by breaking apart
numbers to make a ten.
Break the numbers into tens
and ones.
Use a number that adds with
the 6 in 26 to make a 10.
Since 6 ! 4 " 10, use 4.
Reteaching 2-3
tens
ones
31 "
30
!
1
45 "
40
!
5
Think: 17 " 4 ! 13.
Add 26 ! 4 " 30.
Add 30 ! 13 " 43.
Add the tens: 30 ! 40 " 70.
So, 26 ! 17 " 43.
Add the ones: 1 ! 5 " 6.
Add the sums: 70 ! 6 " 76.
So, 31 ! 45 " 76.
Find each sum using mental math.
1. 24 ! 71 "
4. 25 ! 49 "
95
74
2. 36 ! 43 "
5. 37 ! 56 "
79
93
3. 54 ! 23 "
6. 77 ! 13 "
77
90
7. Number Sense To add 32 ! 56, Juanita first added 30 ! 50.
What two steps does she still need to do to find the sum?
What is Juanita’s sum?
She needs to add 2 ! 6 " 8
and then 80 ! 8 " 88.
Steve can break apart 34 as 32 ! 2, so
he can make a ten by adding 48 ! 2 "
50. Then he can add 50 ! 32 " 82.
46
28421_031_048.indd 46
© Pearson Education, Inc. 3
8. Reasoning How can Steve add 48 ! 34 by making a ten?
What is the sum?
Topic 2
3/14/08 1:02:06 PM
Name
Practice
2-3
Using Mental Math to Add
Use breaking apart to add mentally.
1. 53 ! 34
2. 42 ! 29
3. 47 ! 41
29 " 20 !
34 " 30 !
53 !
" 83
83 !
" 87
42 !
So, 53 ! 34 "
" 62
41 "
!1
47 !
" 87
! 9 " 71
! 1 " 88
So, 42 ! 29 "
So, 47 ! 41 "
Practice 2-3
Make a ten to add mentally.
4. 27 ! 24
24 " 3 !
27 !
6. 38 ! 27
5. 54 ! 19
19 "
" 30
60 !
! 21 " 51
!6
27 "
! 25
! 6 " 60
38 !
" 40
40 !
" 65
" 73
So, 54 ! 19 "
So, 27 ! 24 "
So, 38 ! 27 "
Find each sum using mental math.
7. 52 ! 26
© Pearson Education, Inc. 3
11. 43 ! 38
8. 47 ! 8
9. 32 ! 17
10. 28 ! 31
12. 72 ! 7
13. 42 ! 33
14. 36 ! 14
15. Number Sense Ashton broke apart a number into 30 ! 7.
What number did he start with?
16. What is the sum of 27 ! 42 using mental math?
A 68
B 69
C 78
D 79
Topic 2
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47
1/16/08 4:48:36 PM
Name
Practice
2-3
Using Mental Math to Add
Use breaking apart to add mentally.
1. 53 ! 34
2. 42 ! 29
34 " 30 !
4
3. 47 ! 41
29 " 20 !
30 " 83
83 ! 4 " 87
So, 53 ! 34 " 87
53 !
42 !
9
20 " 62
62 ! 9 " 71
So, 42 ! 29 "
40 ! 1
47 ! 40 " 87
87 ! 1 " 88
So, 47 ! 41 " 88
41 "
71
Practice 2-3
Make a ten to add mentally.
4. 27 ! 24
24 " 3 !
27 !
3
6. 38 ! 27
5. 54 ! 19
21
19 "
13 ! 6
54 ! 6 " 60
60 ! 13 " 73
So, 54 ! 19 " 73
" 30
30 ! 21 " 51
So, 27 ! 24 " 51
2 ! 25
38 ! 2 " 40
40 ! 25 " 65
So, 38 ! 27 " 65
27 "
Find each sum using mental math.
7. 52 ! 26
78
11. 43 ! 38
© Pearson Education, Inc. 3
81
8. 47 ! 8
9. 32 ! 17
10. 28 ! 31
12. 72 ! 7
13. 42 ! 33
14. 36 ! 14
55
79
49
75
59
50
15. Number Sense Ashton broke apart a number into 30 ! 7.
What number did he start with?
37
16. What is the sum of 27 ! 42 using mental math?
A 68
B 69
C 78
D 79
Topic 2
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47
3/14/08 1:02:07 PM
Name
Enrichment
2-3
Break It Up and Add
1. Which choice helps the most to solve 43 ! 8?
Number Sense
A Think of 8 as 4 ! 4.
B Think of 43 as 44 " 1.
C Think of 8 as 10 " 2.
Explain.
Enrichment 2-3
43 ! 8 #
2. Which choice helps the most to solve 67 ! 29?
A Think of 67 as 63 ! 4.
B Think of 29 as 30 " 1.
C Think of 29 as 25 ! 4.
Explain.
67 ! 29 #
3. Which choice does NOT help you solve 63 ! 28 using mental
math?
A Think of 63 as 60 ! 3.
B Think of 28 as 30 " 2.
C Think of 28 as 25 ! 3.
63 ! 28 #
48
28421_031_048.indd 48
© Pearson Education, Inc. 3
Explain.
Topic 2
1/16/08 4:48:37 PM
Name
Enrichment
2-3
Break It Up and Add
1. Which choice helps the most to solve 43 ! 8?
Number Sense
A Think of 8 as 4 ! 4.
B Think of 43 as 44 " 1.
C Think of 8 as 10 " 2.
Explain.
Add 43 ! 10 " 53, then subtract 2.
Enrichment 2-3
43 ! 8 #
51
2. Which choice helps the most to solve 67 ! 29?
A Think of 67 as 63 ! 4.
B Think of 29 as 30 " 1.
C Think of 29 as 25 ! 4.
Explain.
Add 67 ! 30 " 97, then subtract 1.
67 ! 29 #
96
3. Which choice does NOT help you solve 63 ! 28 using mental
math?
A Think of 63 as 60 ! 3.
B Think of 28 as 30 " 2.
C Think of 28 as 25 ! 3.
You should find the sum using
tens. 25 is not a tens number.
63 ! 28 # 91
48
28421_031_048.indd 48
© Pearson Education, Inc. 3
Explain.
Topic 2
3/14/08 1:02:09 PM
Name
Choose the best answer.
1. A leopard can live as many as 23
years. A monkey can live 14 more
years than a leopard. How many
years can a monkey live?
Daily Spiral Review
2-4
4. Write 3,549 in expanded form.
A 37
B 36
C 27
5. Len has these bills and coins in
his pocket.
D 9
Daily Spiral Review
2. An encyclopedia has 24 volumes.
Mrs. Anderson lent 7 volumes to
Katie. How many volumes does
Mrs. Anderson have left?
B 17
C 21
2-4
A 7
What is the total value of the
money in Len’s pocket?
D 31
3. Ms. Robinson leaves work at the
time shown on the clock below.
11 12 1
10
2
9
3
8
4
7 6 5
At what time does she leave work?
A 3:05
B 3:25
© Pearson Education, Inc. 3
C 5:03
6. There are 16 counties in Maine.
California has 42 more counties
than Maine. How many counties
does California have?
7. Marisa is counting wheels on
bicycles and tricycles at the park.
She counted 3 vehicles and
7 wheels. How many bicycles
and how many tricycles did
Marisa see?
D 5:15
Topic 2
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49
1/16/08 4:49:36 PM
Name
Daily Spiral Review
2-4
Choose the best answer.
1. A leopard can live as many as 23
years. A monkey can live 14 more
years than a leopard. How many
years can a monkey live?
A 37
B 36
C 27
4. Write 3,549 in expanded form.
3,000 ! 500 !
40 ! 9
5. Len has these bills and coins in
his pocket.
D 9
Daily Spiral Review
2. An encyclopedia has 24 volumes.
Mrs. Anderson lent 7 volumes to
Katie. How many volumes does
Mrs. Anderson have left?
B 17
C 21
D 31
3. Ms. Robinson leaves work at the
time shown on the clock below.
11 12 1
10
2
9
3
8
4
7 6 5
At what time does she leave work?
A 3:05
B 3:25
© Pearson Education, Inc. 3
C 5:03
D 5:15
2-4
A 7
What is the total value of the
money in Len’s pocket?
$7.81
6. There are 16 counties in Maine.
California has 42 more counties
than Maine. How many counties
does California have?
58
7. Marisa is counting wheels on
bicycles and tricycles at the park.
She counted 3 vehicles and
7 wheels. How many bicycles
and how many tricycles did
Marisa see?
2 bicycles and
1 tricycle
Topic 2
28421_039_063.indd 49
49
3/14/08 12:59:40 PM
50
28421_039_063.indd 50
Problem of the Day 2-4
Topic 2
Problem
of the
Day
2-4
Brooke bought a pencil and an
eraser. How much did she spend?
2-4
1/16/08 4:49:37 PM
© Pearson Education, Inc. 3
Problem of the Day
School Supply Store
Eraser
15¢
Pen
55¢
Pencil
35¢
Ruler
65¢
Name
Addition Number Sense:
Rounding
20
Interactive Learning
Recording Sheet
3
30
1.
rounds to
2.
rounds to
400
500
rounds to
4.
rounds to
230
Interactive Learning
Recording Sheet 3
3.
240
5.
rounds to
6.
rounds to
Work with a partner. Use the number lines above. Be ready to explain your work.
7. Round 28 to the nearest 10.
8. Round 466 to the nearest hundred.
© Pearson Education, Inc. 3
9. Round 233 to the nearest ten.
Topic 2
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51
1/16/08 4:49:39 PM
Name
Kerry
Addition Number Sense:
Rounding
20
1.
2.
27
21
rounds to
rounds to
30
20
500
410
448
rounds to
rounds to
400
400
Interactive Learning
Recording Sheet 3
4.
230
5.
6.
3
30
400
3.
Interactive Learning
Recording Sheet
240
234
236
rounds to
rounds to
230
240
Work with a partner. Use the number lines above. Be ready to explain your work.
7. Round 28 to the nearest 10.
30
500
230
8. Round 466 to the nearest hundred.
© Pearson Education, Inc. 3
9. Round 233 to the nearest ten.
Topic 2
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51
3/14/08 12:59:43 PM
Name
Quick Check
2-4
1. Zoller School has a total 542 students. Rounded to the
nearest ten, about how many students go to Zoller School?
530
535
540
545
550
A 550
B 540
C 530
D 500
Quick Check 2-4
2. The Klines are taking a car trip. They will drive 365 miles to
visit family members in Maine. To the nearest hundred, about
how many miles will the Klines drive?
A 300
B 360
C 370
D 400
3. Becky has a secret number. To the nearest ten or the nearest
hundred, her number rounds to 200. Which could be Becky’s
number?
A 186
B 192
C 204
D 208
© Pearson Education, Inc. 3
4. Writing to Explain Describe the steps you would follow to
round 647 to the nearest ten.
52
28421_039_063.indd 52
Topic 2
1/16/08 4:49:40 PM
Name
Quick Check
2-4
1. Zoller School has a total 542 students. Rounded to the
nearest ten, about how many students go to Zoller School?
530
535
540
545
550
A 550
B 540
C 530
D 500
Quick Check 2-4
2. The Klines are taking a car trip. They will drive 365 miles to
visit family members in Maine. To the nearest hundred, about
how many miles will the Klines drive?
A 300
B 360
C 370
D 400
3. Becky has a secret number. To the nearest ten or the nearest
hundred, her number rounds to 200. Which could be Becky’s
number?
A 186
B 192
C 204
D 208
4. Writing to Explain Describe the steps you would follow to
round 647 to the nearest ten.
© Pearson Education, Inc. 3
See students’ samples at the right.
52
28421_039_063.indd 52
Topic 2
3/14/08 12:59:45 PM
Name
Reteaching
2-4
Rounding
You can use place value to round to the nearest ten or hundred.
Find the rounding place. If the digit in the ones or the tens place is
5, 6, 7, 8, or 9, then round to the next greater number. If the digit
is less than 5, do not change the digit in the rounding place.
Round 17 to the nearest ten: 20
Explain. 7 is in the ones place. Round to the next greater ten.
Round 153 to the nearest ten. 150
Explain. Because 3 is in the ones place and 3 is less than 5, the digit in
Reteaching 2-4
the tens place doesn’t change.
Round 575 to the nearest hundred. 600
Explain. Because the 7 in the tens place is 5 or greater, round to the
next greater hundred.
1. Round 63 to the nearest ten:
Explain.
Round each number to the nearest ten.
2. 58
3. 71
4. 927
5. 3,121
Round each number to the nearest hundred.
© Pearson Education, Inc. 3
6. 577
7. 820
8. 2,345
9. 8,750
10. Reasoning If you live 71 mi from a river, does it make sense
to say you live about 80 mi from the river? Explain.
Topic 2
28421_039_063.indd 53
53
1/16/08 4:49:41 PM
Name
Reteaching
2-4
Rounding
You can use place value to round to the nearest ten or hundred.
Find the rounding place. If the digit in the ones or the tens place is
5, 6, 7, 8, or 9, then round to the next greater number. If the digit
is less than 5, do not change the digit in the rounding place.
Round 17 to the nearest ten: 20
Explain. 7 is in the ones place. Round to the next greater ten.
Round 153 to the nearest ten. 150
Explain. Because 3 is in the ones place and 3 is less than 5, the digit in
Reteaching 2-4
the tens place doesn’t change.
Round 575 to the nearest hundred. 600
Explain. Because the 7 in the tens place is 5 or greater, round to the
next greater hundred.
60
Explain. Three is in the ones place, so the
6 stays the same.
Round each number to the nearest ten.
1. Round 63 to the nearest ten:
2. 58
60
3. 71
70
4. 927
930
5. 3,121
3,120
Round each number to the nearest hundred.
© Pearson Education, Inc. 3
6. 577
600
7. 820
800
8. 2,345
2,300
9. 8,750
8,800
10. Reasoning If you live 71 mi from a river, does it make sense
to say you live about 80 mi from the river? Explain.
No. To the nearest ten, 71 rounds to 70.
Topic 2
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53
3/14/08 12:59:46 PM
Name
Practice
2-4
Rounding
Round to the nearest ten.
1. 37
2. 93
3. 78
4. 82
5. 24
6. 426
7. 329
8. 815
9. 163
10. 896
Practice 2-4
Round to the nearest hundred.
11. 395
12. 638
13. 782
14. 246
15. 453
16. 529
17. 877
18. 634
19. 329
20. 587
21. Number Sense Tyrell says 753 rounds to 800. Sara says 753
rounds to 750. Who is correct? Explain.
22. Explain It How would you use a number line to round 148 to
the nearest ten.
24. Which number does not round to 400?
A 347
54
28421_039_063.indd 54
B 369
C 413
D 448
© Pearson Education, Inc. 3
23. There are 254 counties in Texas. What is that number rounded to the
nearest ten? What is that number rounded to the nearest hundred?
Topic 2
1/16/08 4:49:43 PM
Name
Practice
2-4
Rounding
Round to the nearest ten.
1. 37
40
6. 426
430
2. 93
90
7. 329
330
3. 78
80
4. 82
80
5. 24
20
8. 815
9. 163
10. 896
820
160
900
Round to the nearest hundred.
11. 395
12. 638
13. 782
14. 246
15. 453
16. 529
17. 877
18. 634
19. 329
20. 587
Practice 2-4
400
500
600
900
800
600
200
300
500
600
21. Number Sense Tyrell says 753 rounds to 800. Sara says 753
rounds to 750. Who is correct? Explain.
Both are correct. Tyrell rounded 753 to
the nearest hundred and Sara rounded
753 to the nearest ten.
22. Explain It How would you use a number line to round 148 to
the nearest ten.
Since 148 is closer to 150 than to 140
on a number line, 148 rounds to 150.
23. There are 254 counties in Texas. What is that number rounded to the
nearest ten? What is that number rounded to the nearest hundred?
24. Which number does not round to 400?
A 347
54
28421_039_063.indd 54
B 369
C 413
D 448
© Pearson Education, Inc. 3
250, 300
Topic 2
3/14/08 12:59:47 PM
Name
And the Answer Is?
1. If 569 rounds to 570, what is the
rounding place?
Enrichment
2-4
Estimation
2. When this 3-digit number is rounded to the
nearest ten, the sum of its digits is 16. The
hundreds digit of this number is 8 and the
ones digit is 5. What is the number?
3. When this 3-digit number is rounded to the
nearest ten, it rounds to 350. The number
is less than 360 and greater than 350.
The ones digit is an even number that
you count after 2. What is the number?
Enrichment 2-4
4. When this 3-digit number is rounded to the
nearest hundred, it rounds to 200. Rounded
to the nearest ten, this number rounds to
200. The sum of the digits of this number
is 19. What is the number?
5. When this 3-digit number is rounded to the
nearest ten or hundred, the numbers round up.
All of the digits in this number are the same.
The sum of the digits is 15. What is the number?
© Pearson Education, Inc. 3
6. When this 3-digit number is rounded to the
nearest hundred, it rounds up to 500. The
hundreds digit is less than 6. The digits in the
tens and ones place add to a sum of 10 and they
are the same. What is the number?
7. When this 3-digit number is rounded to the
nearest hundred it rounds down to 900. The
digit in the ones place is the fifth odd number
that you count beginning with 1. The sum of
the digits is 22. What is the number?
Topic 2
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55
1/16/08 4:49:45 PM
Name
And the Answer Is?
2-4
Estimation
Tens place
2. When this 3-digit number is rounded to the
nearest ten, the sum of its digits is 16. The
hundreds digit of this number is 8 and the
ones digit is 5. What is the number?
875
3. When this 3-digit number is rounded to the
nearest ten, it rounds to 350. The number
is less than 360 and greater than 350.
The ones digit is an even number that
you count after 2. What is the number?
354
4. When this 3-digit number is rounded to the
nearest hundred, it rounds to 200. Rounded
to the nearest ten, this number rounds to
200. The sum of the digits of this number
is 19. What is the number?
199
5. When this 3-digit number is rounded to the
nearest ten or hundred, the numbers round up.
All of the digits in this number are the same.
The sum of the digits is 15. What is the number?
555
6. When this 3-digit number is rounded to the
nearest hundred, it rounds up to 500. The
hundreds digit is less than 6. The digits in the
tens and ones place add to a sum of 10 and they
are the same. What is the number?
455
7. When this 3-digit number is rounded to the
nearest hundred it rounds down to 900. The
digit in the ones place is the fifth odd number
that you count beginning with 1. The sum of
the digits is 22. What is the number?
949
Topic 2
28421_039_063.indd 55
Enrichment 2-4
© Pearson Education, Inc. 3
1. If 569 rounds to 570, what is the
rounding place?
Enrichment
55
3/14/08 12:59:49 PM
Name
Daily Spiral Review
2-5
Choose the best answer.
1. There were 283 people at a
parade. The local newspaper
rounded the attendance to the
nearest hundred. How many
people did the newspaper say
attended the parade?
4. George goes to sleep at the time
shown on the digital clock below.
Using words, write when George
goes to sleep.
A 200
B 280
C 290
D 300
2. Which number is greater than
235,187?
B 234,988
C 225,187
D 235,188
Approximate Length (mi)
3. How much longer is the
St. Gotthard Tunnel than the
Shimizu Tunnel?
Length of World Tunnels
14
12
10
8
6
4
2
0
B 4 miles
C 3 miles
D 2 miles
28421_039_063.indd 56
North American Rivers
River
Length (in miles)
Peace
1,210
Snake
1,038
Mackenzie
1,060
Columbia
1,243
Rogers Pass St. Gotthard Shimizu
Canada
Switzerland Japan
A 5 miles
56
6. Use the chart below to order the
lengths of the rivers from least to
greatest.
7. Write 7,093 in word form.
© Pearson Education, Inc. 3
2-5
Daily Spiral Review
A 235,167
5. Christine is playing a board game.
She scored 35 points on her first
turn. On her next turn, she scored
26 points. How many points did
Christine score in all?
Topic 2
1/16/08 4:49:46 PM
Name
Daily Spiral Review
2-5
Choose the best answer.
1. There were 283 people at a
parade. The local newspaper
rounded the attendance to the
nearest hundred. How many
people did the newspaper say
attended the parade?
4. George goes to sleep at the time
shown on the digital clock below.
Using words, write when George
goes to sleep.
A 200
B 280
Accept eight-fifty, ten to nine,
or fifty minutes past eight.
D 300
2. Which number is greater than
235,187?
61
B 234,988
C 225,187
2-5
Daily Spiral Review
A 235,167
5. Christine is playing a board game.
She scored 35 points on her first
turn. On her next turn, she scored
26 points. How many points did
Christine score in all?
D 235,188
Approximate Length (mi)
3. How much longer is the
St. Gotthard Tunnel than the
Shimizu Tunnel?
Length of World Tunnels
14
12
10
8
6
4
2
0
Rogers Pass St. Gotthard Shimizu
Canada
Switzerland Japan
A 5 miles
B 4 miles
C 3 miles
D 2 miles
56
28421_039_063.indd 56
6. Use the chart below to order the
lengths of the rivers from least to
greatest.
North American Rivers
River
Length (in miles)
Peace
1,210
Snake
1,038
Mackenzie
1,060
Columbia
1,243
Snake, Mackenzie,
Peace, Columbia
7. Write 7,093 in word form.
seven thousand,
ninety-three
© Pearson Education, Inc. 3
C 290
Topic 2
3/14/08 12:59:50 PM
28421_039_063.indd 57
© Pearson Education, Inc. 3
Problem
Day
2-5
Hector rounded his number to the
nearest ten and got 100. What could
Hector’s number have been? List all
possible answers.
of the
2-5
57
Problem of the Day
Topic 2
Problem of the Day 2-5
1/16/08 4:49:47 PM
Name
Addition Number Sense:
Estimating Sums
Type of Bear
Sun Bear
Black Bear
Interactive Learning
Recording Sheet
4
Weight
Female
Male
78 pounds
95 pounds
215 pounds
345 pounds
rounds to
rounds to
Estimated sum:
!
"
Interactive Learning
Recording Sheet 4
So, the weight of
is greater than
the weight of
.
is a compatible number for
is a compatible number for
Estimated sum:
So, the weight of
!
"
is greater than the weight of
.
rounds to
rounds to
So, the weight of
!
"
is greater than the weight of
.
58
28421_039_063.indd 58
© Pearson Education, Inc. 3
Estimated sum:
Topic 2
1/16/08 4:49:49 PM
Name
Jackson
Addition Number Sense:
Estimating Sums
4
Weight
Female
Male
78 pounds
95 pounds
215 pounds
345 pounds
Type of Bear
Sun Bear
Black Bear
80
rounds to 100
80 ! 100 " 180
Estimated sum:
So, the weight of the female black bear is greater than
rounds to
the weight of
210
340
2 sun bears
.
215
is a compatible number for 345
Estimated sum: 210 ! 340 " 550
So, the weight of 600 is greater than the weight of
the female and male black bears
215 rounds to 200 or 220
345 rounds to 300 or 350
is a compatible number for
Estimated sum:
210
or 220
!
300
or 350
"
.
500
or 570
600 is greater than the weight of
the female and male black bears
So, the weight of
58
28421_039_063.indd 58
.
© Pearson Education, Inc. 3
Interactive Learning
Recording Sheet 4
78
95
Interactive Learning
Recording Sheet
Topic 2
3/14/08 12:59:53 PM
Name
1. The table shows how many books
are in a class library. To the nearest
ten books, about how many poetry
and biography books are there?
A 270
Quick Check
2-5
Type of Book
Fiction
Poetry
Biography
Science
Number
223
51
146
70
B 220
C 200
D 120
2. Jed is in a flying disc contest. His first throw goes 97 feet. His
next throw goes 128 feet. Which number sentence shows the
best way to estimate the total distance of both throws?
A 100 ! 100 " 200
B 100 ! 120 " 220
Quick Check 2-5
C 97 ! 128 " 225
D 100 ! 130 " 230
© Pearson Education, Inc. 3
3. Writing to Explain A car in a carnival ride can hold
400 pounds. Dad weighs 196 pounds. Mom weighs
133 pounds. Can both ride the car safely together?
Explain how you would estimate to find your answer.
Tell how you know your answer makes sense.
Topic 2
28421_039_063.indd 59
59
1/16/08 4:49:50 PM
Name
1. The table shows how many books
are in a class library. To the nearest
ten books, about how many poetry
and biography books are there?
A 270
Quick Check
2-5
Type of Book
Fiction
Poetry
Biography
Science
Number
223
51
146
70
B 220
C 200
D 120
2. Jed is in a flying disc contest. His first throw goes 97 feet. His
next throw goes 128 feet. Which number sentence shows the
best way to estimate the total distance of both throws?
A 100 ! 100 " 200
B 100 ! 120 " 220
Quick Check 2-5
C 97 ! 128 " 225
D 100 ! 130 " 230
3. Writing to Explain A car in a carnival ride can hold
400 pounds. Dad weighs 196 pounds. Mom weighs
133 pounds. Can both ride the car safely together?
Explain how you would estimate to find your answer.
Tell how you know your answer makes sense.
© Pearson Education, Inc. 3
See students’ samples at the right.
Topic 2
28421_039_063.indd 59
59
3/14/08 12:59:54 PM
Name
Reteaching
2-5
Estimating Sums
Suppose your class has a goal of saving 275 cereal box tops.
136
152
Does your class have enough box tops to reach the goal?
Reteaching 2-5
Since you only need to know if you have enough,
you can estimate.
You can estimate by rounding. You can round each addend to the
nearest ten or hundred. Then add the rounded numbers.
Round to the nearest ten.
Round to the nearest hundred.
136
!
140
136
!
100
! 152
!
150
290
! 152
!
200
300
Since 290 " 275, you have enough.
Since 300 " 275, you have enough.
Round to the nearest ten to estimate each sum.
1. 42 ! 98 #
2. 36 ! 59 #
3. 288 ! 475 #
Round to the nearest hundred to estimate each sum.
5. 436 ! 309 #
6. 76 ! 487 #
7. Reasonableness Sun-Yi estimated 270 ! 146 and got 300.
Is her estimate reasonable? Explain.
60
28421_039_063.indd 60
© Pearson Education, Inc. 3
4. 378 ! 136 #
Topic 2
1/16/08 4:49:52 PM
Name
Reteaching
2-5
Estimating Sums
Suppose your class has a goal of saving 275 cereal box tops.
136
152
Does your class have enough box tops to reach the goal?
You can estimate by rounding. You can round each addend to the
nearest ten or hundred. Then add the rounded numbers.
Round to the nearest ten.
Round to the nearest hundred.
136
!
140
136
!
100
! 152
!
150
290
! 152
!
200
300
Since 290 " 275, you have enough.
Since 300 " 275, you have enough.
Round to the nearest ten to estimate each sum.
1. 42 ! 98 #
140
2. 36 ! 59 #
100
3. 288 ! 475 #
770
6. 76 ! 487 #
600
Round to the nearest hundred to estimate each sum.
4. 378 ! 136 #
500
5. 436 ! 309 #
700
7. Reasonableness Sun-Yi estimated 270 ! 146 and got 300.
Is her estimate reasonable? Explain.
No. If you round to the nearest hundred the estimate
60
28421_039_063.indd 60
is 300 ! 100 " 400. If you round to the nearest ten
the estimate is 270 ! 150 " 420.
© Pearson Education, Inc. 3
Reteaching 2-5
Since you only need to know if you have enough,
you can estimate.
Topic 2
3/14/08 12:59:56 PM
Name
Practice
2-5
Estimating Sums
Round to the nearest ten to estimate.
1. 58 ! 43
2. 87 ! 69
3. 37 ! 141
4. 422 ! 296
7. 713 ! 82
8. 313 ! 405
Round to the nearest hundred to estimate.
5. 536 ! 393
6. 242 ! 359
Use compatible numbers to estimate. Sample answers are given.
Accept reasonable answers.
9. 83 ! 34
10. 329 ! 64
11. 212 ! 347
12. 537 ! 244
Practice 2-5
13. Reasonableness Miguel has 325 baseball cards and
272 football cards. He said that he has 597 cards in all.
Is his answer reasonable? Explain using estimation.
14. Write a Problem Natalie has 138 DVDs and 419 CDs.
If you were to estimate the sum of the DVDs and CDs, what
sentence could you write? Then find your estimated sum.
© Pearson Education, Inc. 3
15. Which of the following shows estimating 287 ! 491 by using
compatible numbers?
A 100 ! 500
B 300 ! 400
C 280 ! 400
D 280 ! 500
Topic 2
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61
1/16/08 4:49:53 PM
Name
Practice
2-5
Estimating Sums
Round to the nearest ten to estimate.
1. 58 ! 43
100
2. 87 ! 69
160
3. 37 ! 141
4. 422 ! 296
7. 713 ! 82
8. 313 ! 405
180
720
Round to the nearest hundred to estimate.
5. 536 ! 393
900
6. 242 ! 359
600
800
700
Use compatible numbers to estimate. Sample answers are given.
Accept reasonable answers.
9. 83 ! 34
120
10. 329 ! 64
395
11. 212 ! 347
12. 537 ! 244
560
780
Miguel’s answer is reasonable. Round the number of
Practice 2-5
13. Reasonableness Miguel has 325 baseball cards and
272 football cards. He said that he has 597 cards in all.
Is his answer reasonable? Explain using estimation.
cards to the nearest ten: 325 rounds to 330 and 272
rounds to 270, and 330 ! 270 " 600. Since 597 is
close to 600, the answer is reasonable.
14. Write a Problem Natalie has 138 DVDs and 419 CDs.
If you were to estimate the sum of the DVDs and CDs, what
sentence could you write? Then find your estimated sum.
Possible answers: 140 ! 420 " 560 or
100 ! 400 " 500
© Pearson Education, Inc. 3
15. Which of the following shows estimating 287 ! 491 by using
compatible numbers?
A 100 ! 500
B 300 ! 400
C 280 ! 400
D 280 ! 500
Topic 2
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61
3/14/08 12:59:57 PM
Name
Enrichment
2-5
Art Supplies
The Art Club is planning to buy new
supplies. There are 12 students in the club.
The list at the right shows the different
packages and the price for each package.
The club plans to buy only 2 packages
from the list.
1. Which two packages on the list are the
least expensive?
Decision Making
Supply Packages
Price
1 dozen paintbrushes
$24
6 watercolor sets
$54
2 dozen pads of paper
$72
4 sets of colored pencils
$18
12 tubes of oil paint
$33
Enrichment 2-5
2. Which two packages are the most expensive?
3. Which two packages on the list cost about $40 all together?
4. Which two packages on the list cost about $85 all together?
6. Without a spending limit, which two packages should the
Art Club buy? Explain your answer.
62
28421_039_063.indd 62
© Pearson Education, Inc. 3
5. Besides the cost of the items, what are two questions that
the Art Club should ask before purchasing supplies?
Topic 2
1/16/08 4:49:54 PM
Name
Enrichment
2-5
Art Supplies
The Art Club is planning to buy new
supplies. There are 12 students in the club.
The list at the right shows the different
packages and the price for each package.
The club plans to buy only 2 packages
from the list.
1. Which two packages on the list are the
least expensive?
Paintbrushes and
colored pencils
Decision Making
Supply Packages
Price
1 dozen paintbrushes
$24
6 watercolor sets
$54
2 dozen pads of paper
$72
4 sets of colored pencils
$18
12 tubes of oil paint
$33
2. Which two packages are the most expensive?
Enrichment 2-5
Watercolor sets and paper
3. Which two packages on the list cost about $40 all together?
Paintbrushes and colored pencils
4. Which two packages on the list cost about $85 all together?
Watercolor sets and oil paint
5. Besides the cost of the items, what are two questions that
the Art Club should ask before purchasing supplies?
6. Without a spending limit, which two packages should the
Art Club buy? Explain your answer.
Sample answer: Paper and watercolor
sets; They contain the most supplies.
62
28421_039_063.indd 62
© Pearson Education, Inc. 3
Sample answers: What supplies does
the club need the most? What
supplies do members use the most?
Topic 2
3/14/08 12:59:58 PM
Name
Daily Spiral Review
2-6
Choose the best answer.
1. Margot has the money shown
below in her backpack.
4. Order the numbers from least
to greatest.
961, 971, 917, 977
What is the value of the money in
Margot’s backpack?
A $6.77
B $6.72
5. There are 276 students at
Johnson Elementary School.
There are 412 students at
Eisenhower Elementary School.
Estimate the total number of
students all together.
C $6.67
D $6.57
B Subtract 8
C Subtract 12
2-6
A Add 8
Phil has 10 golf balls. Steve has twice
as many golf balls as Phil. Paul has
2 more golf balls than Phil and Steve
have all together.
6. How many golf balls does
Steve have?
Daily Spiral Review
2. Which describes the pattern
below?
72, 64, 56, 48, 40, …
Use this information to answer 6 and 7.
D Add 12
3. What is 312 rounded to the
nearest ten?
7. How many golf balls does
Paul have?
A 300
B 310
© Pearson Education, Inc. 3
C 320
D 400
Topic 2
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63
1/16/08 4:49:56 PM
Name
Daily Spiral Review
2-6
Choose the best answer.
1. Margot has the money shown
below in her backpack.
4. Order the numbers from least
to greatest.
961, 971, 917, 977
917, 961,
971, 977
What is the value of the money in
Margot’s backpack?
A $6.77
B $6.72
C $6.67
D $6.57
B Subtract 8
C Subtract 12
D Add 12
3. What is 312 rounded to the
nearest ten?
A 300
B 310
Use this information to answer 6 and 7.
Phil has 10 golf balls. Steve has twice
as many golf balls as Phil. Paul has
2 more golf balls than Phil and Steve
have all together.
2-6
A Add 8
Accept 690 or 700
6. How many golf balls does
Steve have?
Daily Spiral Review
2. Which describes the pattern
below?
72, 64, 56, 48, 40, …
5. There are 276 students at
Johnson Elementary School.
There are 412 students at
Eisenhower Elementary School.
Estimate the total number of
students all together.
20
7. How many golf balls does
Paul have?
32
© Pearson Education, Inc. 3
C 320
D 400
Topic 2
28421_039_063.indd 63
63
3/14/08 1:00:00 PM
64
28421_064_087.indd 64
Problem of the Day 2-6
Topic 2
Problem
of the
Day
2-6
Write a number sentence.
Then solve.
Hope had 14 dolls in her collection.
She received 2 more as gifts. How
many dolls did Hope have then?
2-6
Problem of the Day
1/16/08 4:47:15 PM
© Pearson Education, Inc. 3
Name
Quick Check
2-6
1. Two teams had a tug-of-war. There were 28 kids on the red team.
There were 27 kids on the blue team. How many kids were in the
tug-of-war in all?
A 45
B 46
C 54
D 55
2. Clay rode his bike 56 miles last week. He rode his bike 67 miles this
week. He hopes to ride 72 miles next week. Which number sentence
shows how many miles Clay has ridden so far?
A 56 ! 67 " ■
B 56 ! 72 " ■
C 56 ! 67 ! 72 " ■
D 72 # 67 " ■
© Pearson Education, Inc. 3
Quick Check 2-6
3. Writing to Explain Suppose you want to estimate the sum of
86 and 19. Explain your thinking. Then show how to find the exact sum.
Explain how to know if your answer makes sense.
Topic 2
28421_064_087.indd 65
65
1/16/08 4:47:16 PM
Name
Quick Check
2-6
1. Two teams had a tug-of-war. There were 28 kids on the red team.
There were 27 kids on the blue team. How many kids were in the
tug-of-war in all?
A 45
B 46
C 54
D 55
2. Clay rode his bike 56 miles last week. He rode his bike 67 miles this
week. He hopes to ride 72 miles next week. Which number sentence
shows how many miles Clay has ridden so far?
A 56 ! 67 " ■
B 56 ! 72 " ■
C 56 ! 67 ! 72 " ■
D 72 # 67 " ■
Quick Check 2-6
3. Writing to Explain Suppose you want to estimate the sum of
86 and 19. Explain your thinking. Then show how to find the exact sum.
Explain how to know if your answer makes sense.
© Pearson Education, Inc. 3
See students’ samples at the right.
Topic 2
28421_064_087.indd 65
65
3/14/08 1:02:19 PM
Name
Reteaching
2-6
Adding 2-Digit Numbers
To find 27 ! 57, first estimate by rounding. Since 7 " 5,
round 27 to 30 and 57 to 60. Then add: 30 ! 60 # 90.
Ones
Tens
Ones
1
Reteaching 2-6
Tens
1.
28
! 34
2.
56
! 22
3.
84
! 17
4.
49
! 72
5.
26
! 19
6.
65
! 23
7.
22
! 79
8.
38
! 85
9. Reasonableness Hannah added 65 and 26 and got 81.
Is this answer reasonable? Explain.
66
28421_064_087.indd 66
© Pearson Education, Inc. 3
Estimate. Then find each sum.
Topic 2
1/16/08 4:47:18 PM
Name
Reteaching
2-6
Adding 2-Digit Numbers
To find 27 ! 57, first estimate by rounding. Since 7 " 5,
round 27 to 30 and 57 to 60. Then add: 30 ! 60 # 90.
Ones
Tens
Ones
1
Reteaching 2-6
Tens
Estimate. Then find each sum.
28
! 34
60, 62
5.
26
! 19
50, 45
2.
56
! 22
80, 78
6.
65
! 23
90, 88
3.
4.
84
! 17
49
! 72
100, 101
120, 121
7.
8.
22
! 79
100, 101
38
! 85
130, 123
9. Reasonableness Hannah added 65 and 26 and got 81.
Is this answer reasonable? Explain.
No; The estimate would be close to 90.
66 Topic 2
The actual answer is 91.
28421_064_087.indd 66
© Pearson Education, Inc. 3
1.
3/14/08 1:02:21 PM
Name
Practice
2-6
Adding 2-Digit Numbers
Estimate. Then find each sum.
1.
73
! 19
2.
16
! 48
3.
52
! 79
4.
28
! 25
5.
47
! 34
6.
53
! 45
7.
37
! 21
8.
63
! 24
9.
59
! 76
10.
29
! 44
11.
58 ! 28 12.
53 ! 72
13.
66 ! 23
14.
42 ! 31
15.
36 ! 52
16. Critical Thinking Mr. McWilliams drove 76 miles Monday
and 43 miles Tuesday. Follow the steps to find how many
miles Mr. McWilliams drove all together.
a. Write a number sentence to show how to solve the problem.
Practice 2-6
b. Estimate the total distance Mr. McWilliams drove.
c. Find the actual total distance.
© Pearson Education, Inc. 3
17. Reasoning Using four different digits, what is the least
sum you can get when you add two 2-digit numbers?
Write your problem.
18. There are 72 people on a train when 25 more people enter.
How many people are on the train now?
A 79
B 87
C 97
D 98
Topic 2
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67
1/16/08 4:47:19 PM
Name
Practice
2-6
Adding 2-Digit Numbers
Estimate. Then find each sum.
1.
73
! 19
2.
16
! 48
3.
37
! 21
8.
52
! 79
4.
28
! 25
90; 92
70; 64 130; 131
60; 53
6.
7.
9.
53
! 45
100; 98
11.
60; 58
58 ! 28 12.
53 ! 72
63
! 24
5.
80; 81
59
! 76
10.
80; 87 140; 135
13.
90; 86 120; 125
66 ! 23
90; 89
14.
47
! 34
29
! 44
70; 73
42 ! 31
15.
70; 73
36 ! 52
90; 88
16. Critical Thinking Mr. McWilliams drove 76 miles Monday
and 43 miles Tuesday. Follow the steps to find how many
miles Mr. McWilliams drove all together.
a. Write a number sentence to show how to solve the problem.
Practice 2-6
76 ! 43 " !
b. Estimate the total distance Mr. McWilliams drove.
80 ! 40 " 120
c. Find the actual total distance.
76 ! 43 " 119
17. Reasoning Using four different digits, what is the least
sum you can get when you add two 2-digit numbers?
Write your problem.
© Pearson Education, Inc. 3
33; 13 ! 20 " 33 or 10 ! 23 " 33
18. There are 72 people on a train when 25 more people enter.
How many people are on the train now?
A 79
B 87
C 97
D 98
Topic 2
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67
3/14/08 1:02:22 PM
Name
Enrichment
2-6
Model the Sum
Draw the missing tens and ones for each sum.
1.
Number Sense
2.
48
73
4.
Enrichment 2-6
3.
105
39
Write the missing numbers.
7
5.
6.
1 2
7.
4
2
1 1 0
9 5
© Pearson Education, Inc. 3
9 6
68
28421_064_087.indd 68
Topic 2
1/16/08 4:47:21 PM
Name
Enrichment
2-6
Model the Sum
Draw the missing tens and ones for each sum.
1.
Number Sense
For 1–4, sample answers are given.
2.
48
73
4.
Enrichment 2-6
3.
105
39
Write the missing numbers.
5.
3
7
1 2
9 8
1 1 0
7.
4
5
3
2
9 5
© Pearson Education, Inc. 3
9 6
6.
68
28421_064_087.indd 68
Topic 2
3/14/08 1:02:24 PM
Name
Daily Spiral Review
2-7
Choose the best answer.
1. The Spurs scored 18 points in the
first quarter. They scored 27 more
points before halftime. How many
total points did the Spurs have at
halftime?
A 35
Compare the numbers. Use !, ", or #
to answer 4 and 5.
4. 673
773
5. 2,107
2,017
B 44
C 45
D 55
2. Carrie has $0.81 in her pocket.
Which coins could she have?
6. Melissa read 38 pages of a
book yesterday. Today she
read 46 more pages. How many
pages of the book has Melissa
read all together?
A 3 quarters and 1 penny
7. Write an example of the
Associative Property of Addition
using the numbers 3, 4, and 7.
B 3 quarters, 1 nickel, and
1 penny
C 3 quarters, 1 dime, and
1 penny
D 3 quarters and 1 nickel
1
2
Money
Earned
$5
$10
3
2-7
Number of
Weeks
8. Artie has $0.25. He does not have
any pennies. In how many different
ways can Artie have $0.25?
Daily Spiral Review
3. Carlos earns $5 allowance each
week. How much money will he
earn after 4 weeks?
4
List them.
A $40
B $25
© Pearson Education, Inc. 3
C $20
D $15
Topic 2
28421_064_087.indd 69
69
1/16/08 4:47:22 PM
Name
Daily Spiral Review
2-7
Choose the best answer.
1. The Spurs scored 18 points in the
first quarter. They scored 27 more
points before halftime. How many
total points did the Spurs have at
halftime?
A 35
Compare the numbers. Use !, ", or #
to answer 4 and 5.
< 773
2,107 > 2,017
4. 673
5.
B 44
C 45
D 55
2. Carrie has $0.81 in her pocket.
Which coins could she have?
6. Melissa read 38 pages of a
book yesterday. Today she
read 46 more pages. How many
pages of the book has Melissa
read all together?
84
A 3 quarters and 1 penny
7. Write an example of the
Associative Property of Addition
using the numbers 3, 4, and 7.
B 3 quarters, 1 nickel, and
1 penny
C 3 quarters, 1 dime, and
1 penny
D 3 quarters and 1 nickel
1
2
Money
Earned
$5
$10
A $40
B $25
© Pearson Education, Inc. 3
C $20
D $15
3
4
4
List them.
1 quarter,
2 dimes and
1 nickel, 1 dime
and 3 nickels,
5 nickels
Topic 2
28421_064_087.indd 69
2-7
Number of
Weeks
8. Artie has $0.25. He does not have
any pennies. In how many different
ways can Artie have $0.25?
Daily Spiral Review
3. Carlos earns $5 allowance each
week. How much money will he
earn after 4 weeks?
Possible answer:
3 ! (7 ! 4) "
(3 ! 7) ! 4
69
3/14/08 1:02:25 PM
70
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Problem of the Day 2-7
Topic 2
Problem
of the
Day
2-7
2-7
1/16/08 4:47:24 PM
© Pearson Education, Inc. 3
Problem of the Day
Muffins Made
Tell if you need an
Number of
Person
Muffins
exact answer or an
Jada
28
17
estimate. Then solve. Courtney
Tanya
13
Jada and her friends Debbie
12
want to make at least
60 muffins for the bake
sale. Did they make enough?
Name
Quick Check
2-7
1. Which number sentence do the place-value blocks below show?
A 361 ! 154 " 515
B 316 ! 145 " 561
C 316 ! 145 " 454
D 316 ! 145 " 461
2. A movie played on Saturday and on Sunday. On Saturday,
284 people bought tickets for the show. On Sunday,
327 people bought tickets for the show. How many tickets
were sold in all?
A 1,511
B 701
C 611
D 501
© Pearson Education, Inc. 3
Quick Check 2-7
3. Writing to Explain Write the steps you follow to add two
3-digit numbers. Be sure to explain how to tell whether or
not you need to regroup.
Topic 2
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71
1/16/08 4:47:25 PM
Name
Quick Check
2-7
1. Which number sentence do the place-value blocks below show?
A 361 ! 154 " 515
B 316 ! 145 " 561
C 316 ! 145 " 454
D 316 ! 145 " 461
2. A movie played on Saturday and on Sunday. On Saturday,
284 people bought tickets for the show. On Sunday,
327 people bought tickets for the show. How many tickets
were sold in all?
A 1,511
B 701
C 611
D 501
Quick Check 2-7
3. Writing to Explain Write the steps you follow to add two
3-digit numbers. Be sure to explain how to tell whether or
not you need to regroup.
© Pearson Education, Inc. 3
See students’ samples at the right.
Topic 2
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71
3/14/08 1:02:28 PM
Name
Reteaching
2-7
Models for Adding
3-Digit Numbers
Find 152 ! 329.
Step 1: Show each number with place-value blocks.
Step 2: Combine the ones.
2 ! 9 " 11
Step 3: Combine the tens.
50 ! 20 " 70
Step 4: Combine the hundreds.
Reteaching 2-7
Step 5: Add.
100 ! 300 " 400
400 ! 70 ! 11 " 481
Write each problem and find the sum.
1.
2.
3.
© Pearson Education, Inc. 3
4.
72
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Topic 2
1/16/08 4:47:27 PM
Name
Reteaching
2-7
Models for Adding
3-Digit Numbers
Find 152 ! 329.
Step 1: Show each number with place-value blocks.
Step 2: Combine the ones.
2 ! 9 " 11
Step 3: Combine the tens.
50 ! 20 " 70
Step 4: Combine the hundreds.
400 ! 70 ! 11 " 481
Write each problem and find the sum.
1.
133 ! 87 " 220
2.
256 ! 122 " 378
3.
146 ! 134 " 280
4.
72
28421_064_087.indd 72
263 ! 248 " 511
© Pearson Education, Inc. 3
Reteaching 2-7
Step 5: Add.
100 ! 300 " 400
Topic 2
3/14/08 1:02:30 PM
Name
Practice
2-7
Models for Adding
3-Digit Numbers
Write each problem and find the sum.
1.
2.
3. Number Sense Ed wants to show 137 ! 429 with placevalue blocks. He has enough hundreds and ones blocks but
only 4 tens blocks. Can he show the problem? Explain.
4. Museum A has 127 steps. Museum B has 194 steps.
How many steps do the museums have all together?
Place-value blocks may help.
Practice 2-7
5. The country of Malta has an area of 316 square miles. The
country of Saint Kitts and Nevis has an area of 261 square
miles. What is the area of the two countries all together?
square miles
© Pearson Education, Inc. 3
6. The longest vertical lift drawbridge in the United States is the
Arthur Kill Bridge at 558 feet. The longest steel truss bridge
in the United States is the Glade Creek Bridge. The Glade
Creek Bridge is 226 feet longer than the Arthur Kill Bridge.
How many feet long is the Glade Creek Bridge?
feet
7. Larry was playing a board game. Larry scored 273 points
on the first game and 248 points on the second game.
How many points did Larry score in all?
A 411
B 421
C 511
D 521
Topic 2
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73
1/16/08 4:47:28 PM
Name
Practice
2-7
Models for Adding
3-Digit Numbers
Write each problem and find the sum.
1.
2.
243 ! 112 " 355
37 ! 148 " 185
3. Number Sense Ed wants to show 137 ! 429 with placevalue blocks. He has enough hundreds and ones blocks but
only 4 tens blocks. Can he show the problem? Explain.
No, he does not have enough tens blocks.
He needs to have at least 5 tens blocks.
4. Museum A has 127 steps. Museum B has 194 steps.
How many steps do the museums have all together?
Place-value blocks may help.
321
Practice 2-7
5. The country of Malta has an area of 316 square miles. The
country of Saint Kitts and Nevis has an area of 261 square
miles. What is the area of the two countries all together?
577
square miles
© Pearson Education, Inc. 3
6. The longest vertical lift drawbridge in the United States is the
Arthur Kill Bridge at 558 feet. The longest steel truss bridge
in the United States is the Glade Creek Bridge. The Glade
Creek Bridge is 226 feet longer than the Arthur Kill Bridge.
How many feet long is the Glade Creek Bridge?
784
feet
7. Larry was playing a board game. Larry scored 273 points
on the first game and 248 points on the second game.
How many points did Larry score in all?
A 411
B 421
C 511
D 521
Topic 2
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73
3/14/08 1:02:31 PM
Name
Enrichment
2-7
Town Squares
Number Sense
James and Belinda traveled from their
hometown, Mathville, to several different
cities. The table shows the distances
from Mathville to each city. Use the
distances to divide each town square
shown below in half. In the squares, each
city is represented by the first letter in its
name. The sum of the distances in one
half of the square must equal the sum of
the distances in the other half.
1.
2.
A
E
3.
G
A
Distances from Mathville to:
Allentown
359 mi
Bensonville
430 mi
Centropolis
110 mi
Denton City
119 mi
Edgarton
249 mi
Franksburg
229 mi
Grandview
158 mi
Highfield
407 mi
Irving Glen
178 mi
4.
D
E
A
F
B
B
I
C
H
A
F
G
Replace the letters with numbers that will correctly solve the problem.
5.
359
! ADD
570
6.
123
! SUM
579
7.
179
! AND
425
8.
135
! ODD
846
74
Topic 2
28421_064_087.indd 74
© Pearson Education, Inc. 3
Enrichment 2-7
Number Words
1/16/08 4:47:29 PM
Name
Enrichment
2-7
Town Squares
Number Sense
James and Belinda traveled from their
hometown, Mathville, to several different
cities. The table shows the distances
from Mathville to each city. Use the
distances to divide each town square
shown below in half. In the squares, each
city is represented by the first letter in its
name. The sum of the distances in one
half of the square must equal the sum of
the distances in the other half.
1.
608
517
2.
3.
478
A
E
G
A
D
E
B
I
C
H
A
F
Distances from Mathville to:
4.
A
Allentown
359 mi
Bensonville
430 mi
Centropolis
110 mi
Denton City
119 mi
Edgarton
249 mi
Franksburg
229 mi
Grandview
158 mi
Highfield
407 mi
Irving Glen
178 mi
588 or the square
divided by a
F
B
horizontal or
G
a vertical rule.
Replace the letters with numbers that will correctly solve the problem.
5.
359
! ADD
570
ADD ! 211
6.
123
! SUM
579
SUM ! 456
7.
179
! AND
425
AND ! 246
8.
135
! ODD
846
ODD ! 711
74
Topic 2
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© Pearson Education, Inc. 3
Enrichment 2-7
Number Words
3/14/08 1:02:32 PM
Name
Daily Spiral Review
2-8
Choose the best answer.
1. Barry wants to make a threedimensional shape with 2 circles
and 1 rectangle. What is the
name of the shape that Barry
can make?
A Cube
B Cylinder
C Pyramid
D Prism
2. Which property of addition is
shown below?
7!4"4!7
Write each missing number.
4. 9 !
5. 7 ! 8 "
"9
!7
6. Yasmine bowled two games. She
scored 87 on her first game and
78 on her second game. What
was Yasmine’s combined score?
7. Write the word form of 2,803.
A Associative
B Commutative
C Identity
D Inverse
A 557
B 593
Daily Spiral Review
2-8
3. A report said there are 600 students
at Springfield Elementary School.
The number was rounded to the
nearest ten. How many students
could there actually be?
8. Doug is reading two books.
The first book is 322 pages.
The second book is 589 pages.
Rounded to the nearest hundred,
about how many pages will Doug
read?
9. Name an activity that takes about
one hour.
C 604
© Pearson Education, Inc. 3
D 636
Topic 2
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75
1/16/08 4:47:31 PM
Name
Daily Spiral Review
2-8
Choose the best answer.
1. Barry wants to make a threedimensional shape with 2 circles
and 1 rectangle. What is the
name of the shape that Barry
can make?
A Cube
B Cylinder
C Pyramid
D Prism
2. Which property of addition is
shown below?
7!4"4!7
A Associative
B Commutative
C Identity
D Inverse
A 557
B 593
C 604
0
5. 7 ! 8 "
"9
8
!7
6. Yasmine bowled two games. She
scored 87 on her first game and
78 on her second game. What
was Yasmine’s combined score?
165
7. Write the word form of 2,803.
two thousand,
eight hundred
three
8. Doug is reading two books.
The first book is 322 pages.
The second book is 589 pages.
Rounded to the nearest hundred,
about how many pages will Doug
read?
900
9. Name an activity that takes about
one hour.
Answers will
vary. Sample
answer: Play
soccer.
© Pearson Education, Inc. 3
D 636
4. 9 !
Daily Spiral Review
2-8
3. A report said there are 600 students
at Springfield Elementary School.
The number was rounded to the
nearest ten. How many students
could there actually be?
Write each missing number.
Topic 2
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75
3/14/08 1:02:34 PM
76
28421_064_087.indd 76
Problem of the Day 2-8
Topic 2
Problem
of the
Day
2-8
Write a number sentence. Then
solve. Spencer’s basketball team
scored 17 points in the first half and
24 points in the second half.
What was the team’s final score?
2-8
Problem of the Day
1/16/08 4:47:32 PM
© Pearson Education, Inc. 3
Name
Quick Check
2-8
1. Last year Devin took 628 pictures of his puppy. Carson took
487 pictures of his cat. How many pictures did the boys take
in all?
A 1,015
B 1,105
C 1,115
D 1,205
2. Captain Ferry is a pilot. She flew 874 miles on Monday,
915 miles on Tuesday, and 708 miles on Wednesday.
Which number sentence shows how far she flew on
Monday and on Wednesday?
A 874 ! 915 ! 708 " 2,497 miles
B 874 ! 915 " 1,789 miles
C 915 ! 708 " 1,623 miles
D 708 ! 874 " 1,582 miles
3. Writing to Explain Zoë added 403 and 968 in her head.
She got the exact sum correctly and quickly. Explain how
you think she did this.
© Pearson Education, Inc. 3
Quick Check 2-8
Topic 2
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77
1/16/08 4:47:34 PM
Name
Quick Check
2-8
1. Last year Devin took 628 pictures of his puppy. Carson took
487 pictures of his cat. How many pictures did the boys take
in all?
A 1,015
B 1,105
C 1,115
D 1,205
2. Captain Ferry is a pilot. She flew 874 miles on Monday,
915 miles on Tuesday, and 708 miles on Wednesday.
Which number sentence shows how far she flew on
Monday and on Wednesday?
A 874 ! 915 ! 708 " 2,497 miles
B 874 ! 915 " 1,789 miles
C 915 ! 708 " 1,623 miles
D 708 ! 874 " 1,582 miles
3. Writing to Explain Zoë added 403 and 968 in her head.
She got the exact sum correctly and quickly. Explain how
you think she did this.
See students’ samples at the right.
© Pearson Education, Inc. 3
Quick Check 2-8
Topic 2
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77
3/14/08 1:02:37 PM
Name
Reteaching
2-8
Adding 3-Digit Numbers
Find 237 ! 186.
Hundreds
Tens
Ones
200
30
7
100
80
6
237
186
Step 1: Add the ones. 7 ones ! 6 ones " 13 ones
Regroup. 13 ones " 1 ten, 3 ones
Step 2: Add the tens. 1 ten ! 3 tens ! 8 tens " 12 tens
Regroup. 12 tens " 1 hundred, 2 tens
Step 3: Add the hundreds.
1 hundred ! 2 hundreds ! 1 hundred " 4 hundreds
Add together the hundreds, tens, and ones.
Reteaching 2-8
400 ! 20 ! 3 " 423
Estimate. Then find each sum.
1.
118
! 146
2.
283
! 147
3.
542
! 109
4.
220
! 479
5. Find the sum of 456 and 238.
7. Estimation Estimate to decide which sum is
less than 600: 356 ! 292 or 214 ! 356.
78
28421_064_087.indd 78
© Pearson Education, Inc. 3
6. Add 109 and 656.
Topic 2
1/16/08 4:47:35 PM
Name
Reteaching
2-8
Adding 3-Digit Numbers
Find 237 ! 186.
Hundreds
Tens
Ones
200
30
7
100
80
6
237
186
Step 1: Add the ones. 7 ones ! 6 ones " 13 ones
Regroup. 13 ones " 1 ten, 3 ones
Step 2: Add the tens. 1 ten ! 3 tens ! 8 tens " 12 tens
Regroup. 12 tens " 1 hundred, 2 tens
Step 3: Add the hundreds.
1 hundred ! 2 hundreds ! 1 hundred " 4 hundreds
Add together the hundreds, tens, and ones.
Estimate. Then find each sum.
1.
118
! 146
200, 264
2.
283
! 147
400, 430
3.
542
! 109
600, 651
4.
220
! 479
6. Add 109 and 656.
700, 699
694
765
7. Estimation Estimate to decide which sum is
less than 600: 356 ! 292 or 214 ! 356.
214 ! 356
5. Find the sum of 456 and 238.
78
28421_064_087.indd 78
© Pearson Education, Inc. 3
Reteaching 2-8
400 ! 20 ! 3 " 423
Topic 2
3/14/08 1:02:38 PM
Name
Practice
2-8
Adding 3-Digit Numbers
Estimate. Then find each sum.
1.
329
! 468
6.
645
! 79
2.
148
! 231
7.
536
! 399
3.
555
! 222
8.
4.
472
! 515
5.
268
! 422
10. Critical Thinking Follow the steps below
to find how many combined points were
scored by Howie and Theo.
a. Write a number sentence to show how
to solve the problem.
9.
396
! 428
633
! 210
Points Scored
Player
Points
Howie
272
Theo
325
Isabel
288
b. Estimate the total points scored by Howie and Theo.
c. Find the actual total.
Practice 2-8
11. Explain It Write an addition story for two 3-digit numbers.
Write the answer to your story.
© Pearson Education, Inc. 3
12. Sharon can run 278 yards in one minute. Pete can run
145 more yards than Sharon in one minute. How many
yards can Pete run in one minute?
13. There were 752 people at a town meeting last week. There
were 163 more people this week. How many people attended
this week’s meeting?
A 815
B 825
C 915
D 925
Topic 2
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79
1/16/08 4:47:37 PM
Name
Practice
2-8
Adding 3-Digit Numbers
Estimate. Then find each sum. Estimates may vary.
1.
329
! 468
2.
148
! 231
3.
555
! 222
4.
472
! 515
5.
396
! 428
800; 797 300; 379 800; 777 1,000; 987 800; 824
6.
645
! 79
7.
536
! 399
700; 724 900; 935
8.
268
! 422
9.
700; 690
10. Critical Thinking Follow the steps below
to find how many combined points were
scored by Howie and Theo.
a. Write a number sentence to show how
to solve the problem.
272 ! 325 " !
633
! 210
800; 843
Points Scored
Player
Points
Howie
272
Theo
325
Isabel
288
b. Estimate the total points scored by Howie and Theo.
Possible estimate: 300 ! 300 " 600
c. Find the actual total. 272 ! 325 " 597
Practice 2-8
11. Explain It Write an addition story for two 3-digit numbers.
Write the answer to your story.
Answers will vary. Check students’ work.
12. Sharon can run 278 yards in one minute. Pete can run
145 more yards than Sharon in one minute. How many
yards can Pete run in one minute?
© Pearson Education, Inc. 3
423
13. There were 752 people at a town meeting last week. There
were 163 more people this week. How many people attended
this week’s meeting?
A 815
B 825
C 915
D 925
Topic 2
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79
3/14/08 1:02:40 PM
Name
Enrichment
Baseball by the Numbers
In this math baseball game, each position is marked with a
number value. If the ball lands on any of the positions shown,
you will score points. Which two position number values would
the ball have to land on in order to get the sums listed below?
2-8
Number Sense
442
443
222
441
556
231
668
101
Home Run
999
1. Sum ! 332
2. Sum ! 884
Enrichment 2-8
3. Sum ! 665
4. Sum ! 543
5. Sum ! 769
6. Sum ! 453
8. The sum of which two numbers would equal
more than a home run?
9. What is the lowest score for two numbers?
80
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© Pearson Education, Inc. 3
7. The sum of which two numbers would equal
a home run?
Topic 2
1/16/08 4:47:38 PM
Name
Enrichment
2-8
Baseball by the Numbers
In this math baseball game, each position is marked with a
number value. If the ball lands on any of the positions shown,
you will score points. Which two position number values would
the ball have to land on in order to get the sums listed below?
Number Sense
442
443
222
441
556
231
668
101
Home Run
999
231 ! 101
! 443
Sum ! 884 441
! 443
Sum ! 665 222
! 101
Sum ! 543 442
! 101
Sum ! 769 668
! 231
Sum ! 453 222
2.
Enrichment 2-8
3.
4.
5.
6.
7. The sum of which two numbers would equal
a home run?
8. The sum of which two numbers would equal
more than a home run?
9. What is the lowest score for two numbers?
222 ! 101 " 323
80
28421_064_087.indd 80
443 ! 556
Sample answer:
556 ! 668
© Pearson Education, Inc. 3
1. Sum ! 332
Topic 2
3/14/08 1:02:41 PM
Name
Daily Spiral Review
2-9
Choose the best answer.
1. Tim had 48 DVDs last year. He has
since bought 16 more DVDs. How
many DVDs does Tim have now?
4. Find the sum.
326
! 458
A 32
B 54
C 64
5. What number makes the sentence
below true?
D 74
(3 !
2. The following table shows the
number of people living in a town
over time.
Year
1975
1985
1995
2005
Town Population
Number of People
3,282
4,301
3,280
4,501
In what year did the least number
of people live in the town?
) ! 4 " 3 ! (6 ! 4)
6. What is the missing number in the
pattern below?
3, 6, 9, 12, 15,
,…
7. Lori bought a sweater for $47 and
a pair of jeans for $39. If you were
to round the amount that Lori
spent for each item to the nearest
ten dollars, which numbers would
you use to add?
A 1975
B 1985
C 1995
D 2005
8. Ruthie has 3 coins that are worth
a total of $0.80. What 3 coins
does she have?
2-9
© Pearson Education, Inc. 3
A 800,000 ! 4,000 ! 5,000 !
200 ! 10 ! 2
B 800,000 ! 40,000 ! 500 !
200 ! 10 ! 2
C 800,000 ! 40,000 ! 5,000 !
200 ! 10 ! 2
D 800,000 ! 50,000 ! 4,000 !
200 ! 10 ! 2
Topic 2
28421_064_087.indd 81
Daily Spiral Review
3. Which is the expanded form of
845,212?
81
1/16/08 4:47:40 PM
Name
Daily Spiral Review
2-9
Choose the best answer.
1. Tim had 48 DVDs last year. He has
since bought 16 more DVDs. How
many DVDs does Tim have now?
4. Find the sum.
326
! 458
784
A 32
B 54
C 64
5. What number makes the sentence
below true?
D 74
(3 !
2. The following table shows the
number of people living in a town
over time.
Year
1975
1985
1995
2005
Town Population
Number of People
3,282
4,301
3,280
4,501
In what year did the least number
of people live in the town?
A 1975
B 1985
C 1995
D 2005
) ! 4 " 3 ! (6 ! 4)
6. What is the missing number in the
pattern below?
3, 6, 9, 12, 15,
18 , …
7. Lori bought a sweater for $47 and
a pair of jeans for $39. If you were
to round the amount that Lori
spent for each item to the nearest
ten dollars, which numbers would
you use to add?
$50 ! $40
8. Ruthie has 3 coins that are worth
a total of $0.80. What 3 coins
does she have?
© Pearson Education, Inc. 3
A 800,000 ! 4,000 ! 5,000 !
200 ! 10 ! 2
B 800,000 ! 40,000 ! 500 !
200 ! 10 ! 2
C 800,000 ! 40,000 ! 5,000 !
200 ! 10 ! 2
D 800,000 ! 50,000 ! 4,000 !
200 ! 10 ! 2
Topic 2
28421_064_087.indd 81
2-9
1 half dollar,
1 quarter, 1 nickel
Daily Spiral Review
3. Which is the expanded form of
845,212?
6
81
3/14/08 1:02:43 PM
82
28421_064_087.indd 82
Problem of the Day 2-9
Topic 2
Problem
of the
Day
2-9
2-9
© Pearson Education, Inc. 3
Problem of the Day
1/16/08 4:47:41 PM
The Statue of Liberty proudly stands
in New York Harbor. This famous
landmark is 151 feet tall from the tip
of her torch to the bottoms of her
feet. She stands on a base that is
154 feet tall. What is the total height
of the Statue of Liberty, including
the base?
Name
Adding Whole Numbers to
Solve Problems: Adding Three
or More Numbers
Interactive Learning
Recording Sheet
5
162
124
!
246
Interactive Learning
Recording Sheet 5
182
© Pearson Education, Inc. 3
!
Topic 2
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83
1/16/08 4:47:43 PM
Name
Bernard
Adding Whole Numbers to
Solve Problems: Adding Three
or More Numbers
Interactive Learning
Recording Sheet
5
1
162
124
!
53
339
21
246
Interactive Learning
Recording Sheet 5
182
© Pearson Education, Inc. 3
!
84
512
Topic 2
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83
3/14/08 1:02:46 PM
Name
Quick Check
2-9
1. Andy keeps track of fish sold at his pet store.
The table shows the three most popular kinds
of fish sold. Which number gives the correct
total of the fish that were sold?
A 469
Fish Sales Last Week
Fish
Guppies
Mollies
Tetras
Number
256
39
184
B 479
C 569
D 830
2. Miss Reade runs the Stamp Club. Four students made albums.
Larry has 123 stamps. Margo has 261 stamps. Peter has 87 stamps.
Liza has 55 stamps. Which is the best estimate of how many stamps
in all are in these students’ albums?
A about 450
B about 530
USA
USA
39¢
C about 600
D about 700
39¢
3. Writing to Explain Remi added 357 ! 84 ! 6 like this:
357
84
6 !
1,797
© Pearson Education, Inc. 3
Quick Check 2-9
Why is his answer wrong? Explain his mistake. Find the correct sum.
84
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Topic 2
1/16/08 4:47:44 PM
Name
Quick Check
2-9
1. Andy keeps track of fish sold at his pet store.
The table shows the three most popular kinds
of fish sold. Which number gives the correct
total of the fish that were sold?
A 469
Fish Sales Last Week
Fish
Guppies
Mollies
Tetras
Number
256
39
184
B 479
C 569
D 830
2. Miss Reade runs the Stamp Club. Four students made albums.
Larry has 123 stamps. Margo has 261 stamps. Peter has 87 stamps.
Liza has 55 stamps. Which is the best estimate of how many stamps
in all are in these students’ albums?
A about 450
B about 530
USA
USA
39¢
C about 600
D about 700
39¢
3. Writing to Explain Remi added 357 ! 84 ! 6 like this:
357
84
6 !
1,797
Quick Check 2-9
Why is his answer wrong? Explain his mistake. Find the correct sum.
© Pearson Education, Inc. 3
See students’ samples at the right.
84
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Topic 2
3/14/08 1:02:47 PM
Name
Reteaching
2-9
Adding 3 or More Numbers
Find 137 ! 201 ! 109.
To add three numbers, you can add two numbers first.
Then add the sum of the first two numbers and the
third number.
Step 1
Step 2
1
So, 137 ! 201 ! 109 " 447.
Find each sum.
1.
32
64
! 71
2.
127
39
! 87
3.
293
312
! 78
4.
358
427
! 127
5. 382 ! 45 ! 181 "
6. 52 ! 238 ! 76 "
© Pearson Education, Inc. 3
Reteaching 2-9
7. Number Sense Ranier has 37 baseball cards, 65 football
cards, and 151 hockey cards. How many sports cards
does he have in all? Explain how you found your answer.
Topic 2
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85
1/16/08 4:47:45 PM
Name
Reteaching
2-9
Adding 3 or More Numbers
Find 137 ! 201 ! 109.
To add three numbers, you can add two numbers first.
Then add the sum of the first two numbers and the
third number.
Step 1
Step 2
1
So, 137 ! 201 ! 109 " 447.
Find each sum.
1.
32
64
! 71
2.
167
5. 382 ! 45 ! 181 "
6. 52 ! 238 ! 76 "
127
39
! 87
253
608
366
3.
293
312
! 78
683
4.
358
427
! 127
912
Reteaching 2-9
7. Number Sense Ranier has 37 baseball cards, 65 football
cards, and 151 hockey cards. How many sports cards
does he have in all? Explain how you found your answer.
© Pearson Education, Inc. 3
253; Possible explanation: I added 37 !
65 " 102. Then I added 102 ! 151 " 253.
Topic 2
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3/14/08 1:02:49 PM
Name
Practice
2-9
Adding 3 or More Numbers
Find each sum.
1.
75
36
! 58
2.
6. 237 ! 75 ! 49
3.
142
297
! 116
524
97
! 176
4.
273
187
64
! 249
7. 49 ! 7 ! 63 ! 8
5.
319
48
136
! 347
8. 143 ! 47 ! 219 ! 136
9. Estimation Estimate the sum of 327 ! 419 ! 173.
10. Number Sense Justine has 162 red buttons, 98 blue
buttons, and 284 green buttons. She says she knows she
has more than 500 buttons without adding. Do you agree?
Explain.
Food
Amount Calories
Bran flakes
1 ounce
90
1
105
Orange juice
1 cup
110
Milk
1 cup
150
Banana
12. In winning the 1884 U.S. presidential election, Grover
Cleveland received 219 electoral votes. He received
168 electoral votes in 1888, and lost. Then he received
277 electoral votes and won in 1892. How many electoral
votes did Cleveland receive in all?
13. Kyle has 378 pennies, 192 nickels, and 117 dimes.
How many coins does he have all together?
A 495
86
28421_064_087.indd 86
B 570
C 677
D 687
© Pearson Education, Inc. 3
Practice 2-9
11. Carlos ate or drank everything
that is listed in the table.
How many calories did
Carlos consume?
Topic 2
1/16/08 4:47:47 PM
Name
Practice
2-9
Adding 3 or More Numbers
Find each sum.
1.
75
36
! 58
2.
169
6. 237 ! 75 ! 49
3.
142
297
! 116
555
524
97
! 176
4.
797
7. 49 ! 7 ! 63 ! 8
361
273
187
64
! 249
5.
773
319
48
136
! 347
850
8. 143 ! 47 ! 219 ! 136
127
545
9. Estimation Estimate the sum of 327 ! 419 ! 173.
Possible estimates: 900 or 920
10. Number Sense Justine has 162 red buttons, 98 blue
buttons, and 284 green buttons. She says she knows she
has more than 500 buttons without adding. Do you agree?
Explain.
Yes, if you underestimate by adding only the
hundreds and tens, you get 160 ! 90 ! 280 " 530.
11. Carlos ate or drank everything
that is listed in the table.
How many calories did
Carlos consume?
Amount Calories
Bran flakes
1 ounce
90
1
105
Orange juice
1 cup
110
Milk
1 cup
150
Banana
12. In winning the 1884 U.S. presidential election, Grover
Cleveland received 219 electoral votes. He received
168 electoral votes in 1888, and lost. Then he received
277 electoral votes and won in 1892. How many electoral
votes did Cleveland receive in all?
664
13. Kyle has 378 pennies, 192 nickels, and 117 dimes.
How many coins does he have all together?
A 495
86
28421_064_087.indd 86
B 570
C 677
D 687
© Pearson Education, Inc. 3
Practice 2-9
455
Food
Topic 2
3/14/08 1:02:51 PM
Name
Enrichment
2-9
Chairs for the Teachers
Math teachers from many schools held a meeting at the Hotel
Grand. In preparation, the planning committee placed chairs in
the rooms according to the floor plan.
Reasoning
Floor Plan for Hotel Grand
Grand Room
Purple Ballroom
276
Meeting Rooms
127
Blue Room
31
100
125
Red Room Green Room Yellow Room
1. Which room could hold 100 teachers from Clinton School,
20 students from Rogers School, and 7 principals?
2. Which room was used for 77 third-grade teachers from
Boone School, 2 student teachers, and 21 second-grade
teachers from St. Paul School?
Enrichment 2-9
© Pearson Education, Inc. 3
3. When all of the sixth-grade teachers met, 2 doors had to be
opened between rooms so that 3 rooms could be connected.
Which meeting room arrangement held the most teachers?
4. When all the meeting rooms were filled, only 3 rooms of
people would fit into the chairs already in the Grand Room.
Which 3 rooms of people fit?
Topic 2
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1/16/08 4:47:48 PM
Name
Enrichment
2-9
Chairs for the Teachers
Math teachers from many schools held a meeting at the Hotel
Grand. In preparation, the planning committee placed chairs in
the rooms according to the floor plan.
Reasoning
Floor Plan for Hotel Grand
Grand Room
Purple Ballroom
276
Meeting Rooms
127
Blue Room
31
100
125
Red Room Green Room Yellow Room
1. Which room could hold 100 teachers from Clinton School,
20 students from Rogers School, and 7 principals?
Blue Room
2. Which room was used for 77 third-grade teachers from
Boone School, 2 student teachers, and 21 second-grade
teachers from St. Paul School?
Green Room
Enrichment 2-9
3. When all of the sixth-grade teachers met, 2 doors had to be
opened between rooms so that 3 rooms could be connected.
Which meeting room arrangement held the most teachers?
© Pearson Education, Inc. 3
Blue, Red, and Green rooms
4. When all the meeting rooms were filled, only 3 rooms of
people would fit into the chairs already in the Grand Room.
Which 3 rooms of people fit?
Blue, Red, and Green rooms; or Red,
Green, and Yellow rooms
Topic 2
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3/14/08 1:02:52 PM
Name
Daily Spiral Review
2-10
Choose the best answer.
1. Keri drew a line through the picture
below. Which of the following two
shapes did she form?
4. Louis found 4 coins on the ground.
The total was $0.46. What coins
did he find?
A Triangle and circle
B Triangle and square
C Rectangle and triangle
D Square and rectangle
5. The table shows the distances
between U.S. cities.
Distance Between Cities
Cities
2. Which number below in standard
form do these blocks show?
A 4,020
B 4,002
Distance (in miles)
Boston, MA to
New York, NY
206
New York, NY to
Washington, DC
233
Washington, DC
to Pittsburgh, PA
221
Rounded to the nearest hundred
miles, what is the distance from
Boston to Washington, DC?
C 420
3. On his first math quiz, Steven
scored a 68. Steven’s next math
quiz score was 24 points more
than his first. What was Steven’s
second math quiz score?
A 92
B 84
C 82
D 44
88
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6. How many poems did Batista write?
Number of
Poems Written
Sue
Batista
Rick
Each
! 2 poems
© Pearson Education, Inc. 3
2-10
Daily Spiral Review
D 42
Topic 2
1/16/08 4:46:41 PM
Name
Daily Spiral Review
2-10
Choose the best answer.
1. Keri drew a line through the picture
below. Which of the following two
shapes did she form?
4. Louis found 4 coins on the ground.
The total was $0.46. What coins
did he find?
1 quarter,
2 dimes, and
1 penny
A Triangle and circle
C Rectangle and triangle
D Square and rectangle
5. The table shows the distances
between U.S. cities.
Distance Between Cities
Cities
2. Which number below in standard
form do these blocks show?
A 4,020
B 4,002
C 420
2-10
Daily Spiral Review
D 42
3. On his first math quiz, Steven
scored a 68. Steven’s next math
quiz score was 24 points more
than his first. What was Steven’s
second math quiz score?
206
New York, NY to
Washington, DC
233
Washington, DC
to Pittsburgh, PA
221
Rounded to the nearest hundred
miles, what is the distance from
Boston to Washington, DC?
400 miles
6. How many poems did Batista write?
Number of
Poems Written
Sue
Batista
Rick
Each
B 84
6 poems
D 44
28421_088_093.indd 88
Boston, MA to
New York, NY
A 92
C 82
88
Distance (in miles)
! 2 poems
© Pearson Education, Inc. 3
B Triangle and square
Topic 2
3/14/08 12:59:27 PM
28421_088_093.indd 89
© Pearson Education, Inc. 3
Problem
of the
Day
2-10
Topic 2
Area: 9,926 square miles
Problem of the Day 2-10
1/16/08 4:46:42 PM
89
Problem of the Day
Sicily is part of the country
of Italy. Round the area of
Sicily to the nearest ten
and then to the nearest
hundred.
Sicily
2-10
Italy
Name
Quick Check
2-10
1. Mrs. Freedman ordered books for her class. She got
23 science books, 8 mysteries, and 31 biographies. Which is
the best diagram to use to help you find the total number of
books she bought?
? Books in all
23
A
8
? Books in all
B
23
31
? Books in all
C
23
8
31
31 Books in all
D
23
8
?
2. At a tree nursery, Dinah counted 12 maples, 28 willows, and
13 oaks. About how many trees did Dinah count?
A 60 trees
B 50 trees
C 40 trees
D 35 trees
© Pearson Education, Inc. 3
Quick Check 2-10
3. Writing to Explain How does a diagram help you solve an addition story
problem? Draw a diagram to help you find the exact answer to Exercise 3.
Label each part of the diagram. Give the answer.
90
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Topic 2
1/17/08 10:27:40 AM
Name
Quick Check
2-10
1. Mrs. Freedman ordered books for her class. She got
23 science books, 8 mysteries, and 31 biographies. Which is
the best diagram to use to help you find the total number of
books she bought?
? Books in all
23
A
8
? Books in all
B
23
31
? Books in all
C
23
8
31
31 Books in all
D
23
8
?
2. At a tree nursery, Dinah counted 12 maples, 28 willows, and
13 oaks. About how many trees did Dinah count?
A 60 trees
B 50 trees
C 40 trees
D 35 trees
3. Writing to Explain How does a diagram help you solve an addition story
problem? Draw a diagram to help you find the exact answer to Exercise 3.
Label each part of the diagram. Give the answer.
© Pearson Education, Inc. 3
Quick Check 2-10
See students’ samples at the right.
90
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Topic 2
3/14/08 12:59:30 PM
Name
Reteaching
2-10
Problem Solving:
Draw a Picture
Don sold 18 watermelons in the morning and 14 in the afternoon.
How many watermelons did he sell in all?
You can draw a rectangle to show addition.
Each part of the rectangle represents
one of the addends. Add the parts to
show how many in all.
32 watermelons in all
18
14
Morning
Afternoon
Don sold 32 watermelons in all.
1. Two buses are carrying students
to a field trip. There are 36 students
on one bus and 30 students on
the other. How many students are
on the buses in all?
2. Estimation Vanessa bought a
sweater for $27 and a skirt for
$22. About how much money
did Vanessa spend in all?
in all
students in all
36
30
Bus #1
Bus #2
3. A pet store sold 26 puppies and
14 kittens last month. How many
animals were sold in all?
$30
$20
Sweater
Skirt
4. Ken has 15 rap CDs, 20 country
CDs, and 30 rock CDs. How many
CDs does Ken have in all?
CDs in all
animals in all
26
14
15
20
30
© Pearson Education, Inc. 3
Reteaching 2-10
Topic 2
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91
1/16/08 4:46:46 PM
Name
Reteaching
2-10
Problem Solving:
Draw a Picture
Don sold 18 watermelons in the morning and 14 in the afternoon.
How many watermelons did he sell in all?
You can draw a rectangle to show addition.
Each part of the rectangle represents
one of the addends. Add the parts to
show how many in all.
32 watermelons in all
18
14
Morning
Afternoon
Don sold 32 watermelons in all.
1. Two buses are carrying students
to a field trip. There are 36 students
on one bus and 30 students on
the other. How many students are
on the buses in all?
66
30
Bus #1
Bus #2
3. A pet store sold 26 puppies and
14 kittens last month. How many
animals were sold in all?
26
$50 in all
students in all
36
40
2. Estimation Vanessa bought a
sweater for $27 and a skirt for
$22. About how much money
did Vanessa spend in all?
$20
Sweater
Skirt
4. Ken has 15 rap CDs, 20 country
CDs, and 30 rock CDs. How many
CDs does Ken have in all?
65
animals in all
14
$30
15
20
CDs in all
30
© Pearson Education, Inc. 3
Reteaching 2-10
Topic 2
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91
3/14/08 12:59:31 PM
Name
Practice
2-10
Problem Solving:
Draw a Picture
1. Kelly bought a CD for $15 and a
book for $13. How much money
did Kelly spend in all?
in all
$15
$13
Cost of CD
Cost of book
3. Jane sold 25 raffle tickets
Monday, 30 raffle tickets Tuesday,
and 40 raffle tickets Wednesday.
How many raffle tickets did Jane
sell all together?
tickets in all
25
30
2. Estimation There are 28 students
in the chorus and 31 students in
the band. All will be performing
tonight. About how many students
will be performing in all?
students in all
30
30
Chorus
Band
4. Dan cycled 12 miles Saturday and
18 miles Sunday. How many miles
did he cycle all together?
miles in all
12
18
40
The table shows the number of students who belong to clubs.
Use the table for 5 through 7.
5. How many students belong to the
Spanish and Science clubs?
6. About how many students belong
to the Math and Spanish clubs?
members in all
7. How many students belong to the
Math, Running, and Science clubs?
members in all
© Pearson Education, Inc. 3
Practice 2-10
members in all
Club Membership
Club
Members
Math
24
Spanish
18
Running
15
Science
6
92
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Topic 2
1/16/08 4:46:47 PM
Name
Practice
2-10
Problem Solving:
Draw a Picture
1. Kelly bought a CD for $15 and a
book for $13. How much money
did Kelly spend in all?
$28
in all
$15
$13
Cost of CD
Cost of book
3. Jane sold 25 raffle tickets
Monday, 30 raffle tickets Tuesday,
and 40 raffle tickets Wednesday.
How many raffle tickets did Jane
sell all together?
95
25
tickets in all
30
2. Estimation There are 28 students
in the chorus and 31 students in
the band. All will be performing
tonight. About how many students
will be performing in all?
60
students in all
30
30
Chorus
Band
4. Dan cycled 12 miles Saturday and
18 miles Sunday. How many miles
did he cycle all together?
30
miles in all
12
18
40
The table shows the number of students who belong to clubs.
Use the table for 5 through 7.
Practice 2-10
24
18
members in all
6
6. About how many students belong
to the Math and Spanish clubs?
40
20
92
28421_088_093.indd 92
members in all
20
Club Membership
Club
Members
Math
24
Spanish
18
Running
15
Science
6
7. How many students belong to the
Math, Running, and Science clubs?
45
20
members in all
15 6
© Pearson Education, Inc. 3
5. How many students belong to the
Spanish and Science clubs?
Topic 2
3/14/08 12:59:33 PM
Name
Enrichment
2-10
The Itsy-Bitsy Spider
The itsy-bitsy spider tried to climb up a 14-ft waterspout.
Each day it climbed up the spout 6 ft. Each night it rained
and almost washed the spider out. However, the clever
spider used its legs to stop each night after falling only 3 ft.
Find out how long it took the spider to get out of the waterspout.
The spider’s position at the end of the first night has been
drawn for you.
Decision Making
1. Draw the spider’s position at the end of Night 2.
2. Draw the spider’s position at the end of Night 3.
3. Draw the spider’s position at the end of Night 4.
4. Draw the spider’s position at the end of Night 5.
5. Circle the picture of the spider on the day you think it got
out of the waterspout.
Waterspout (14 ft)
6 ft
Day 2
Night 1
3 ft
Night 2
14
13
12
11
10
9
8
7
6
5
4
3
2
1
9 ft
6 ft
12 ft
Night 3 9 ft
Day 3
14
13
12
11
10
9
8
7
6
5
4
3
2
1
or
14
13
12
11
10
9
8
7
6
5
4
3
2
1
15 ft(out) Day 518 ft
Night 4 12 ft
Night 5 15 ft(out)
Day 4
© Pearson Education, Inc. 3
Day 1
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Enrichment 2-10
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Topic 2
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93
1/16/08 4:46:48 PM
Name
Enrichment
2-10
The Itsy-Bitsy Spider
The itsy-bitsy spider tried to climb up a 14-ft waterspout.
Each day it climbed up the spout 6 ft. Each night it rained
and almost washed the spider out. However, the clever
spider used its legs to stop each night after falling only 3 ft.
Find out how long it took the spider to get out of the waterspout.
The spider’s position at the end of the first night has been
drawn for you.
Decision Making
1. Draw the spider’s position at the end of Night 2.
2. Draw the spider’s position at the end of Night 3.
3. Draw the spider’s position at the end of Night 4.
4. Draw the spider’s position at the end of Night 5.
5. Circle the picture of the spider on the day you think it got
out of the waterspout.
Waterspout (14 ft)
6 ft
Night 1
3 ft
14
13
12
11
10
9
8
7
6
5
4
3
2
1
99 ft
ft
6 ft
ft
Night 2 6
12
12 ft
ft
9 ft
ft
Night 3 9
Day 2
Day 3
14
13
12
11
10
9
8
7
6
5
4
3
2
1
or
or
14
13
12
11
10
9
8
7
6
5
4
3
2
1
18 ft
ft
15
15 ft(out)
ft(out) Day 518
15 ft(out)
ft(out)
12 ft
ft Night 515
Night 412
Day 4
© Pearson Education, Inc. 3
Day 1
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Enrichment 2-10
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Topic 2
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3/14/08 12:59:34 PM
Name
Topic 2
Multiple-Choice
Test
Mark the best answer.
1. If Serena rounds her number of
baseball cards to the nearest
ten, she would have 280. How
many cards could she have in her
collection? (2-4)
4. A supermarket has 337 cans of
soup and 478 packages of instant
soup. How many containers of
soup are there in all? (2-8)
A 705
A 269
B 715
B 272
C 805
C 284
D 815
D 287
2. Which addition sentence is
shown? (2-7)
5. Harry wants to add 47 ! 30 on
a hundred chart. He starts at 47.
What steps does he follow next?
(2-2)
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
A 368 ! 143
B 386 ! 143
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
C 368 ! 134
61 62 63 64 65 66 67 68 69 70
D 17 ! 8
71 72 73 74 75 76 77 78 79 80
3. A store stocks 411 boxes of
cold cereal and 162 boxes of hot
cereal. Which number sentence
shows the best way to estimate
the total boxes of cereal using
compatible numbers? (2-5)
A Count to the right 3 squares.
B Count to the left 3 squares.
C Count down 3 rows.
D Count back 3 rows.
A 400 ! 100 " 500
B 400 ! 150 " 550
C 450 ! 150 " 600
© Pearson Education, Inc. 3
Topic 2
Multiple-Choice Test
D 450 ! 200 " 650
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Topic 2
1/16/08 4:50:02 PM
Name
Topic 2
Multiple-Choice
Test
Mark the best answer.
1. If Serena rounds her number of
baseball cards to the nearest
ten, she would have 280. How
many cards could she have in her
collection? (2-4)
4. A supermarket has 337 cans of
soup and 478 packages of instant
soup. How many containers of
soup are there in all? (2-8)
A 705
A 269
B 715
B 272
C 805
C 284
D 815
D 287
2. Which addition sentence is
shown? (2-7)
5. Harry wants to add 47 ! 30 on
a hundred chart. He starts at 47.
What steps does he follow next?
(2-2)
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
A 368 ! 143
B 386 ! 143
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
C 368 ! 134
61 62 63 64 65 66 67 68 69 70
D 17 ! 8
71 72 73 74 75 76 77 78 79 80
3. A store stocks 411 boxes of
cold cereal and 162 boxes of hot
cereal. Which number sentence
shows the best way to estimate
the total boxes of cereal using
compatible numbers? (2-5)
A Count to the right 3 squares.
B Count to the left 3 squares.
C Count down 3 rows.
D Count back 3 rows.
A 400 ! 100 " 500
B 400 ! 150 " 550
C 450 ! 150 " 600
© Pearson Education, Inc. 3
Topic 2
Multiple-Choice Test
D 450 ! 200 " 650
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Topic 2
3/14/08 1:00:56 PM
Name
Topic 2
Free-Response Test
Answer the questions below.
1. A rodeo has 457 competitors.
What is 457 rounded to the
nearest ten? (2-4)
2. What property of addition is shown
by the following diagram? (2-1)
(••• ! ••••) ! ••••••••• "
••• ! (•••• ! •••••••••)
3. Becky drove 273 miles from
San Antonio to Dallas, then she
drove another 427 miles to Baton
Rogue. Round those distances to
the nearest ten to estimate how
far Becky drove. (2-5)
4. A rancher has 478 cattle and 326
hogs on his ranch. How many
animals does the rancher have in
all? (2-8)
6. A yogurt stand sells 32 vanilla
yogurts and 27 strawberry
yogurts. How many yogurts are
sold altogether? (2-6)
7. Sam jogs for 27 minutes on
Monday. He jogs for 34 minutes
on Tuesday. Use mental math to
find how many minutes Sam jogs
in all. (2-3)
8. Write the addition sentence that is
shown by the blocks. (2-7)
9. Billy wants to add 35 ! 47.
Show how Billy can add the two
numbers by using a breakingapart strategy. (2-3)
5. Use the hundred chart to add
32 ! 45. (2-2)
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80
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Free-Response Test
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Name
Topic 2
Free-Response Test
Answer the questions below.
1. A rodeo has 457 competitors.
What is 457 rounded to the
nearest ten? (2-4)
460
2. What property of addition is shown
by the following diagram? (2-1)
(••• ! ••••) ! ••••••••• "
••• ! (•••• ! •••••••••)
Associative Property
3. Becky drove 273 miles from
San Antonio to Dallas, then she
drove another 427 miles to Baton
Rogue. Round those distances to
the nearest ten to estimate how
far Becky drove. (2-5)
270 ! 430 " 700
4. A rancher has 478 cattle and 326
hogs on his ranch. How many
animals does the rancher have in
all? (2-8)
804
5. Use the hundred chart to add
32 ! 45. (2-2)
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
6. A yogurt stand sells 32 vanilla
yogurts and 27 strawberry
yogurts. How many yogurts are
sold altogether? (2-6)
59
7. Sam jogs for 27 minutes on
Monday. He jogs for 34 minutes
on Tuesday. Use mental math to
find how many minutes Sam jogs
in all. (2-3)
61
8. Write the addition sentence that is
shown by the blocks. (2-7)
283 ! 237
9. Billy wants to add 35 ! 47.
Show how Billy can add the two
numbers by using a breakingapart strategy. (2-3)
47 " 5 ! 42
35 ! 5 " 40
40 ! 42 " 82
So, 35 ! 47 " 82
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80
77
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Free-Response Test
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Name
Topic 2
Performance
Assessment
Your class is visiting a local park. The map below shows some of
the paths in the park. The distances of the paths are measured
in meters.
Scenic View
378 m
79 m
Lodge
74 m
467 m
106 m
Lake
81 m
83 m
412 m
Log Cabin
1. Choose two ways to walk from the log cabin to the lake and
then to the scenic view. On a separate sheet of paper, draw
place-value blocks to show the total distance for each way.
Then write and solve a number sentence to find the total
distance.
2. Choose a way to walk from the log cabin to the scenic view
and then to the lodge. On a separate sheet of paper, draw
place-value blocks to show the total distance. Then write and
solve a number sentence to find the total distance.
4. Choose a way to walk from the lodge to the log cabin, to the
scenic view, and back to the lodge. Estimate the distance.
Then find the exact distance. Explain how you can use your
estimate to check that your answer is reasonable.
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Performance Assessment
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3. Write and solve a number sentence to show the shortest way
from the lodge to the lake. Explain how you decided which
paths to choose.
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Name
Topic 2
Performance
Assessment
Your class is visiting a local park. The map below shows some of
the paths in the park. The distances of the paths are measured
in meters.
Scenic View
378 m
79 m
Lodge
74 m
467 m
106 m
Lake
81 m
83 m
412 m
Log Cabin
1. Choose two ways to walk from the log cabin to the lake and
then to the scenic view. On a separate sheet of paper, draw
place-value blocks to show the total distance for each way.
Then write and solve a number sentence to find the total
distance.
See below.
2. Choose a way to walk from the log cabin to the scenic view
and then to the lodge. On a separate sheet of paper, draw
place-value blocks to show the total distance. Then write and
solve a number sentence to find the total distance.
See below.
3. Write and solve a number sentence to show the shortest way
from the lodge to the lake. Explain how you decided which
paths to choose.
4. Choose a way to walk from the lodge to the log cabin, to the
scenic view, and back to the lodge. Estimate the distance.
Then find the exact distance. Explain how you can use your
estimate to check that your answer is reasonable.
Estimate: 410 ! 110 ! 380 " 900 meters. Exact distance:
412 ! 106 ! 378 " 896. Since my estimate and my answer
are about the same, I know that my answer is reasonable.
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Performance Assessment
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378 ! 74 " 452 m; The distance on the path from the lodge to
the scenic view marked 378 meters is less than the distances
of the other two paths leading from the lodge, so I used 378 as
my first addend. The path from the scenic view that is marked
74 meters is shorter than the path marked 79 meters, so I used
74 for my second addend.
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