Lesson 3: Relating Multiplication Facts

Name:

Lesson 3: Relating Multiplication Facts

1.

How can you relate 4

3 and 6

7?

a.	4 6 = double 4 3 6 7 = 4 6 + 6 + 6	c.	6 8 = double 4 3, then double again 6 7 = 6 8 - 6
b.	4 3 = half of 8 3 6 7 = double 3 4 + 7 + 7	d.	6 7 = 6 9 - 6 - 6 4 3 = half 6 9, then half again

2.

How can you relate 3

7 and 6

8?

a.	6 8 = double 3 8 3 7 = 3 8 3	c.	6 4 = half 6 8 3 7 = 6 4 3 + 7
b.	6 8 = double 6 4 3 7 = 6 4 1 + 1	d.	6 8 = double 3 8 3 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 3 5 2 = 6 3 2
b.	8 6 = 5 4 + 6 + 8 5 2 = half 5 4	d.	8 6 = double 2 6 then double again 5 2 = 2 6 2

4.

How can you relate 2

7 and 7

3?

a.	2 6 = double 2 3 2 7 = 2 3 + 3 + 3 + 3	c.	8 6 = double 2 6 then double again 7 3 = half 8 6
b.	2 7 = 2 6 + 2 7 3 = 2 7 + 7	d.	2 6 = 3 6 2 7 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

Check Your Work

Start Over