Name:    Lesson 3: Relating Multiplication Facts

1.

How can you relate 4 3 and 6 7?
 a. 4 6 = double 4 36 7 = 4 6 + 6 + 6 c. 6 8 = double 4 3, then double again6 7 = 6 8 - 6 b. 4 3 = half of 8 36 7 = double 3 4 + 7 + 7 d. 6 7 = 6 9 - 6 - 64 3 = half 6 9, then half again

2.

How can you relate 3 7 and 6 8?
 a. 6 8 = double 3 83 7 = 3 8 3 c. 6 4 = half 6 83 7 = 6 4 3 + 7 b. 6 8 = double 6 43 7 = 6 4 1 + 1 d. 6 8 = double 3 83 8 = half  6 8 8

3.

How can you relate 5 2 and 8 6?
 a. 8 6 = double 4 6 5 2 = 2 6 2 c. 8 6 = double 6 35 2 = 6 3 2 b. 8 6 = 5 4 + 6 + 85 2 = half 5 4 d. 8 6 = double 2 6 then double again5 2 = 2 6 2

4.

How can you relate 2 7 and 7 3?
 a. 2 6 = double 2 32 7 = 2 3 + 3 + 3 + 3 c. 8 6  = double 2 6 then double again7 3 = half 8 6 b. 2 7 = 2 6 + 27 3 = 2 7 + 7 d. 2 6 = 3 6 27 3 = 3 6 + 2

5.

Karoline used this diagram to calculate 6 7.

Using this diagram, how is 6 7 related to 6 4 and 6 3?
 a. 6 7 = 6 4 + 6 3 c. 6 7 = double 6 4 and half 6 3 b. 6 7 = 6 4 6 3 d. 6 7 =  6 4 6 3

6.

How would you use this diagram to calculate 7 3?

 a. 7 3 = 2 3 5 3 c. 7 3 = 5 3 5 3 b. 7 3 = 2 3 5 3 d. 7 3 = 2 3 + 5 3

7.

How would you use this diagram to calculate 8 4?

 a. 8 4 = 5 4 3 4 c. 8 4 = 5 4 + 3 4 b. 8 4 = half 5 4 + double 3 4 d. 8 4 = 5 4 3 4

8.

How would you use this diagram to calculate 8 4?

 a. 8 4 = 10 4 + 2 4 c. 8 4 = 10 4 2 4 b. 8 4 = half 10 4 + double 2 4 d. 8 4 = 10 4 2 4

9.

How would you use this diagram to calculate 9 3?

 a. 9 3 = 10 3 + 1 3 c. 9 3 = 10 3 1 3 b. 9 3 = 10 3 1 3 d. 9 3 = 10 3 1 3

10.

Which would you use to calcuate 8 7?
 a. 8 7 = 8 8 8 c. 8 7 = 7 7 + 8 b. 8 7 = 8 10 + 8 2 d. 8 7 = 8 10 8 2