Know the Meaning of Multiplication

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;
skip counting
Know the Meaning of Multiplication
When you multiply, you put equal groups together.
a
K
ey Ide
So, multiplication is like adding equal groups.
You can multiply to find the total when there are the same
number of things in each group.
E x am p l E
You can add to find the total.
5 5 5 = 15
You can skip count to find the total: 5, 10, 15 in all
You can multiply to find the total because there are the same number of
oranges in each group.
3 groups of 5 oranges = 15 oranges in all
3 5
15
page 98
Chapter 9 – Lesson 1
C – © CSL Associates, Inc. All rights reserved.
Mr. Clark had 3 plates of oranges.
There were 5 oranges on each plate.
How many oranges did Mr. Clark have?
Name
P RAC T I C E
Write a multiplication sentence. Find how many in all.
236
3. 6 6 6 6
ADMIT
ONE
4. 3 3 3 3 3 3
5. 7 7 7
6 3 18
6. 4 4 4
3 7 21
7. 2 2 2 2 2
3 4 12
8. 10 10 10 10 10
5 2 10
C – © CSL Associates, Inc. All rights reserved.
ADMIT
ONE
326
4 6 24
9. 5 5 5 5
5 10 50
10. 1 1 1 1 1 1
4 5 20
11. 2 2 2 2 2 2
616
12. 7 7 7 7
6 2 12
Math
Reasoning
THE
LIONS
2.
THE
LIONS
1.
Number Sense
4 7 28
MR 2.3
13. Can you write 3 4 5
as a multiplication sentence?
Why or why not?
No; because the groups are not equal.
Chapter 9 – Lesson 1
page 99
MCX94.HW.CL.G3.FM&Lesson.v211
8/3/04
13:56
Page 66
Name
…at home!
P RAC T I C E
Write a multiplication sentence. Find how many in all.
236
3. 5 5 5 5
ADMIT
ONE
ADMIT
ONE
326
4. 10 10 10 10 10 10
4 5 20
5. 6 6 6
6 10 60
6. 7 7 7
3 6 18
3 7 21
8. 3 3 3 3 3 3
5 3 15
9. 4 4 4 4
6 3 18
10. 1 1 1 1 1
4 4 16
11. 2 2 2 2 2
515
12. 6 6 6 6
5 2 10
Number Sense
4 6 24
MR 2.3
13. Can you write 1 2 3
as a multiplication sentence?
Why or why not?
No; because the groups are not equal.
page 66
Home Resource and Homework
Chapter 9 Lesson 1
C – © CSL Associates, Inc. All rights reserved.
7. 3 3 3 3 3
Math
Reasoning
THE
LIONS
2.
THE
LIONS
1.
MCX94TEG3Ch01_32.v8.9.3 2/21/01 14:45 Page 183
Name
P RAC T I C E
Write a multiplication sentence. Find how many in all.
236
3. 6 6 6 6
ADMIT
ONE
4. 3 3 3 3 3 3
5. 7 7 7
6 3 18
6. 4 4 4
3 7 21
7. 2 2 2 2 2
3 4 12
8. 10 10 10 10 10
5 2 10
C – © CSL Associates, Inc. All rights reserved.
ADMIT
ONE
326
4 6 24
9. 5 5 5 5
5 10 50
10. 1 1 1 1 1 1
4 5 20
11. 2 2 2 2 2 2
616
12. 7 7 7 7
6 2 12
Math
Reasoning
THE
LIONS
2.
THE
LIONS
1.
Number Sense
4 7 28
MR 2.3
13. Can you write 3 4 5
as a multiplication sentence?
Why or why not?
No; because the groups are not equal.
Chapter 9 – Lesson 1
Student Book Page
page 99
Name
…at home!
P RAC T I C E
Write a multiplication sentence. Find how many in all.
236
3. 5 5 5 5
ADMIT
ONE
ADMIT
ONE
326
4. 10 10 10 10 10 10
4 5 20
5. 6 6 6
6 10 60
6. 7 7 7
3 6 18
3 7 21
8. 3 3 3 3 3 3
5 3 15
9. 4 4 4 4
6 3 18
10. 1 1 1 1 1
4 4 16
11. 2 2 2 2 2
515
12. 6 6 6 6
5 2 10
Number Sense
4 6 24
MR 2.3
12. Can you write 1 2 3
as a multiplication sentence?
Why or why not?
No; because the groups are not equal.
page 66
Home Resource and Homework
Chapter 9 Lesson 1
C – © CSL Associates, Inc. All rights reserved.
7. 3 3 3 3 3
Math
Reasoning
THE
LIONS
2.
THE
LIONS
1.

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