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Solve addition
and subtraction problems by using data from
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simple charts, picture graphs, and number sentences.
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UNDERLYING SKILLS AND CONCEPTS:
read word problems;
interpret graphs; write equations;
meaning of addition and subtraction
Write a Number Sentence for Data
You can answer questions about graphs.
a
K
ey Ide
You can write a number sentence to answer the question.
E x am p l E
1
Read the question.
Write a number sentence
to solve.
How many people voted
for Goldie or Rex?
Names for a Goldfish
Goldie
Rex
Swimmy
Each
Use the graph.
" 1 vote.
B – © CSL Associates, Inc. All rights reserved.
8 people voted for Goldie.
5 people voted for Rex.
Write a number sentence.
8 ! 5 " 13
So, 13 people voted for Goldie or Rex.
E x am p l E
2
How many more people voted for Swimmy than for Rex?
Use the graph.
How many people voted for Swimmy?
9
How many people voted for Rex?
5
Write a number sentence.
9#5"4
4 more people voted for Swimmy than for Rex.
Chapter 27 – Lesson 4
page 321
Name
P RAC T I C E
Answer each question.
How many people voted for
seal?
14
12
10
How many people voted for
otter?
10
Votes
2
4
5
How many more people
voted for seal than whale?
10 6 4 more
Math
Reasoning
8
0
Seal
6
How many people voted for
whale?
6
Logic
6
2
How many people voted for
seal or otter?
10 12 22 people
8
4
12
3
Favorite Sea Animal
Polar Otter Whale Dolphin
Bear
How many people voted for
dolphin or polar bear?
14 8 22 people
7
How many more people
voted for dolphin than for
polar bear?
14 8 6 people
MR 2.0
Sally told Jim that her favorite number is less than 100,
but close to it. She also told Jim that her favorite digit is 9.
What would you guess is Sally’s favorite number? Explain why.
Possible answer: 99. Sally’s favorite number is less
than but close to 100. Sally likes 9’s. 99 is a good
guess.
page 322
Chapter 27 – Lesson 4
B – © CSL Associates, Inc. All rights reserved.
1
Name
P RAC T I C E
Answer each question.
How many people voted for
lion?
14
12
12
10
How many people voted for
monkey?
Votes
2
How many people voted for
lion or monkey?
Giraffe Lion Monkey Bear
6
How many more people
voted for lion than bear?
Math
Reasoning
Tiger
How many people voted for
tiger or giraffe?
14 8 22 people
7
12 4 8 more
8
0
How many people voted for
bear?
4
5
6
2
12 10 22 people
4
8
4
10
3
Favorite Wild Animal
How many more people
voted for tiger than for
giraffe?
14 8 6 people
Logic
MR 2.0
Sandy told Joe that her favorite number is less than 100,
but close to it. She also told Joe that her favorite digit is 8.
What would you guess is Sandy’s favorite number? Explain why.
Possible answer: 88. Sandy’s favorite number is
less than but close to 100. Sandy likes 8’s.
88 is a good guess.
page 216
Home Resource and Homework
Chapter 27 Lesson 4
B – © CSL Associates, Inc. All rights reserved.
1
MCX94TEG2Ch01_30.v9.4.1 2/19/01 19:54 Page 591
Name
P RAC T I C E
Answer each question.
1
How many people voted for
seal?
12
10
10
How many people voted for
otter?
Votes
2
B – © CSL Associates, Inc. All rights reserved.
0
How many people voted for
seal or otter?
Seal
6
How many people voted for
whale?
6
5
6
2
10 12 22 people
4
8
4
12
3
Favorite Sea Animal
14
How many people voted for
dolphin or polar bear?
14 8 22 people
7
How many more people
voted for seal than whale?
How many more people
voted for dolphin than for
polar bear?
10 6 4 more
Math
Reasoning
8
Polar Otter Whale Dolphin
Bear
Logic
14 8 6 people
MR 2.0
Sally told Jim that her favorite number is less than 100,
but close to it. She also told Jim that her favorite digit is 9.
What would you guess is Sally’s favorite number? Explain why.
Possible answer: 99. Sally’s favorite number is less
than but close to 100. Sally likes 9’s. 99 is a good
guess.
Chapter 27 – Lesson 4
Student Book Page
page 322
Name
P RAC T I C E
Answer each question.
How many people voted for
lion?
14
12
12
10
How many people voted for
monkey?
Votes
2
How many people voted for
lion or monkey?
Giraffe Lion Monkey Bear
6
How many more people
voted for lion than bear?
Math
Reasoning
Tiger
How many people voted for
tiger or giraffe?
14 8 22 people
7
12 4 8 more
8
0
How many people voted for
bear?
4
5
6
2
12 10 22 people
4
8
4
10
3
Favorite Wild Animal
How many more people
voted for tiger than for
giraffe?
14 8 6 people
Logic
MR 2.0
Sandy told Joe that her favorite number is less than 100,
but close to it. She also told Joe that her favorite digit is 8.
What would you guess is Sandy’s favorite number? Explain why.
Possible answer: 88. Sandy’s favorite number is
less than but close to 100. Sandy likes 8’s.
88 is a good guess.
page 216
Home Resource and Homework
Chapter 27 Lesson 4
B – © CSL Associates, Inc. All rights reserved.
1