Math Module 1Lesson 16Use the Distributive Property to find related multiplication facts.

Multiply by 4 Pattern Sheet

2 minutes

End

4 x 7 = Let’s skip-count to solve.

Skip Count by 4s

48

12

16

20 24

4 x 7 = 28

28

Skip Count By 2s To 20 … 2 4 6 8 10 12 14 16 18 20

Skip Count by 3s to 30 … 3 6 9 12 15 18 21 24 27 30

Skip Count

Tape Diagram Review

Write an addition sentence for this tape diagram:

8 + 8 = 16

Tape Diagram Review

Write a multiplication sentence for this tape diagram:

2 x 8 = 16

Tape Diagram Review

Write a multiplication sentence for this tape diagram:

8 16

2 x 8 = 16

Problem of the Day

Ms. Williams seats students in 4 rows of 7when she teaches at Board 1:

XXXXXXXXXXXXXXXXXXXXXXXXXXXX

4 x 7

Use the Commutative Property to show how she seats them when she teaches at Board 2.

Problem of the Day

Board 2:

XXXX XXXX

XXXXXXXXXXXXXXXXXXXX

7 rows of 4!7 x 4

Problem of the Day

Bonus!!!

On Monday 6 students are absent. How many students are in Ms. Williams class on Monday?

4 x 7 = 2828 - 6 = 22

There are 22 students in class on Monday!

Concept Development

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Talk to your partner about how to box an array that shows:

(5 x 4) + (1 x 4)

What fact does the whole array represent?

6 x 4

Concept Development

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Talk to your partner about how to box an array that shows:

(5 x 4) + (2 x 4)

What fact does the whole array represent?

7 x 4

Concept Development

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Talk to your partner about how to box an array that shows:

(5 x 4) + (4 x 4)

What fact does the whole array represent?

9 x 4

Concept Development

What math fact did we use to solve all 3 problems?

5 X 4Discuss with your neighbor: Why did we use 5 x 4 to solve all three problems?

Concept Development

And the answer is …..

Because 5sare easy to solve!

Concept Development

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What multiplication fact does this array represent?

8 x 4

Use the 5s strategy to solve this problem

8 fours

5 fours

3 fours

True or False: In 5 x 4 & 3 x 4 the size of the groups is the

same.

True20 12

32

PROBLEM SET…The key is in how YOU look at it!