Name:    Lesson 2: Special Products

1.

How can you use 7 2 to calculate 7 8?
 a. calculate 7 2, add 7, then add 7, then add 7 again b. calculate 7 2, double it, then double it again c. calculate 7 2, add 2, then add 2 , then add 2 again d. calculate 7 2, add 8, then add 8, then add 8 again

2.

How can you use 3 4 to calculate 3 8?
 a. calculate 3 4, add 4, then add 4 again b. calculate 3 4, add 8, then add 8 again c. calculate 3 4, then double it d. calculate 3 4, double it, then double it again

3.

How can you use 7 10 to calculate 7 9?
 a. calculate 7 10, then subtract 7 c. calculate 7 10, then add 9 b. calculate 7 10, then subtract 9 d. calculate 7 10, then subtract 10

4.

How can you use 9 10 to calculate 9 9?
 a. calculate 9 10, then add 10 c. calculate 9 10, then subtract 10 b. calculate 9 10, then add 9 d. calculate 9 10, then subtract 9

5.

How can you use 5 2 to calculate 5 8?
 a. calculate 5 2, double it, then double it again b. calculate 5 2, add 5, then double it c. calculate 5 2, then double it d. calculate 5 2, add 2, add 5, then double it

6.

Which strategy would you use to calculate 5 9?
 a. calculate 5 3, double it, then double it again b. calculate 5 2, double it, then double it again c. calculate 5 10, then subtract 5 d. calculate 5 10, then half it

7.

Which strategy would you use to calculate 4 9?
 a. calculate 4 2, double it, then double it again b. calculate 4 10, then subtract 4 c. calculate 4 2, then double it d. calculate 4 10, then half it

8.

Which strategy would you use to calculate 8 9?
 a. calculate 9 10, then subtract 9 b. calculate 2 9, then double it c. calculate 8 10, then subtract 9 d. calculate 8 10, then subtract 8

9.

How much more is 7 8 than 9 8?
 a. 16 b. 14 c. 18 d. 20

10.

How much less is 6 7 than 6 9?
 a. 14 b. 16 c. 12 d. 18