CCSS
multiply andthe
divide
within 100, using
strategies
such as the
NS 2.2G3.OA.7
MemorizeFluently
to automaticity
multiplication
table
for numbers
relationship between multiplication and division (e.g., knowing that 8 x 5 = 40, one knows
between 1 and 10.
40 ÷ 5 = 8) or properties of operations. By the end of Grade 3, know from memory all
products of two one-digit numbers.
UNDERLYING SKILLS AND CONCEPTS:
multiplication as repeated
addition
Multiply by 7
a
K
ey Ide
When you know your facts for 2, 3, 4, 5, 9, and 10, you know
most of your facts for 7.
You can multiply two numbers in any order.
1
When you know these facts:
You also know these facts:
2 7 14
7 2 14
3 7 21
7 3 21
4 7 28
7 4 28
5 7 35
7 5 35
9 7 63
7 9 63
10 7 70
7 10 70
E x am p l E
Find these facts:
76
77
78
2
To find 7 6, use 7 5 35.
Then add another 7. 35 7 42
7 6 42
Add another 7 to find 7 7.
42 7 49
Add another 7 to find 7 8.
49 7 56
page 110
Chapter 10 – Lesson 1
C – © CSL Associates, Inc. All rights reserved.
E x am p l E
Name
P RAC T I C E
Multiply.
1.
5
7
2.
35
6. 7
10
7
5
35
3.
21
7.
70
11.
7
3
4
7
9
7
4.
42
8.
28
12.
6
7
7
2
63
8
7
56
5.
28
9.
14
13.
7
4
3
7
63
10.
21
14.
1
7
7
9
7
1
7
15.
7
2
7
14
C – © CSL Associates, Inc. All rights reserved.
Solve.
16. Sandra practices the piano for 2
hours every day. How many
hours does she practice in
a week?
14 hours
Math
Reasoning
17. Leo bought 7 packages of
pencils. There are 10 pencils in
each package. How many
pencils did he buy?
70 pencils
Number Sense
MR 3.2
18. Explain how to find the total
number of dots in this array
without counting every dot.
I can multiply the number
of dots in each row and
by the number of rows.
Chapter 10 – Lesson 1
page 111
MCX94.HW.CL.G3.FM&Lesson.v211
8/3/04
13:56
Page 74
Name
…at home!
P RAC T I C E
Multiply.
1.
4
7
2.
28
6. 7
8
7
3
21
3.
63
7.
56
11.
7
9
8
7
56
7
4
8.
7
1
28
12.
6
7
4.
13.
42
9.
7
6
5. 7
10
42
70
5
7
7
35
7
7
14. 10
7
49
70
10.
7
2
14
15.
9
7
63
16. Juan practices the accordion for
1 hour every day. How many
hours does he practice in
a week?
7 hours
Math
Reasoning
40 sticks of gum
Number Sense
18. What is the total number of
dots in this array?
page 74
17. Lau-ping bought 4 packs of
gum. There are 10 sticks of gum
in each pack. How many sticks
of gum did she buy?
MR 3.2
A. 8 6
B. 8 7
C. 42
D. 49
Home Resource and Homework
Chapter 10 Lesson 1
C – © CSL Associates, Inc. All rights reserved.
Solve.
MCX94TEG3Ch01_32.v8.9.3 2/21/01 14:46 Page 205
Name
P RAC T I C E
Multiply.
1.
5
7
2.
35
6. 7
10
7
5
35
3.
21
7.
70
11.
7
3
4
7
9
7
4.
42
8.
28
12.
6
7
63
5.
28
7
2
9.
14
13.
7
4
3
7
63
10.
21
8
7
14.
56
1
7
7
9
7
1
7
15.
7
2
7
14
C – © CSL Associates, Inc. All rights reserved.
Solve.
16. Sandra practices the piano for 2
hours every day. How many
hours does she practice in
a week?
17. Leo bought 7 packages of
pencils. There are 10 pencils in
each package. How many
pencils did he buy?
14 hours
Math
Reasoning
70 pencils
Number Sense
MR 3.2
18. Explain how to find the total
number of dots in this array
without counting every dot.
I can multiply the number
of dots in each row and
by the number of rows.
Chapter 10 – Lesson 1
Student Book Page
page 111
Name
…at home!
P RAC T I C E
Multiply.
1.
4
7
2.
28
6. 7
8
7
3
21
3.
63
7.
56
11.
7
9
8
7
56
7
4
8.
7
1
28
12.
6
7
4.
13.
42
9.
7
6
5. 7
10
42
70
5
7
7
35
7
7
14. 10
7
49
70
10.
7
2
14
15.
9
7
63
16. Juan practices the accordion for
1 hour every day. How many
hours does he practice in
a week?
7 hours
Math
Reasoning
40 sticks of gum
Number Sense
18. What is the total number of
dots in this array?
page 74
17. Lau-ping bought 4 packs of
gum. There are 10 sticks of gum
in each pack. How many sticks
of gum did she buy?
MR 3.2
A. 8 6
B. 8 7
C. 42
D. 49
Home Resource and Homework
Chapter 10 Lesson 1
C – © CSL Associates, Inc. All rights reserved.
Solve.