Addition and Subtraction

1.

The double of 6 is

• 6

• 12

• 15

2.

The double of 9 is

• 12

• 14

• 18

3.

The double of 10 is

• 20

• 15

• 12

4.

The double of 14 is

• 22

• 28

• 24

5.

Find the missing number.

24+........=38

• 12

• 14

• 16

6.

Find the missing number.

93-........=81

• 12

• 14

• 16

7.

Count back and find the difference between 45 and 51

• 4

• 5

• 6

8.

Count back and find the difference between 76 and 69

• 6

• 7

• 8

9.

Sana picked 14 flowers. Her friend picked 15. How many they picked altogether?

• 25

• 27

• 29