Fluently adding and subtracting within 20

8-2=

• 10

• 6

• 7

• 8

10-2=

• 21

• 8

• 9

• 11

11 - 3 =

• 10

• 7

• 8

4 - 2 =

14 - 7

• 7

• 8

What is 3 - 1?

• 1

• 2

• 3

• 4

22 - 7

10 - 2 =

• 12

• 8

• 10

• 9

10 - 4 =

• five

• six

• seven

• eight

17 - 7

• 11

• 9

• 10

• 4