Simple Addition

Front

9 + 9 = ?

Back

18

Front

4 + 5 = ?

Back

9

Front

9 + 4 = ?

Back

13

Front

0 + 0 = ?

Back

0

Front

8 + 8 = ?

Back

16

Front

1 + 1 = ?

Back

2

Front

2 + 2 = ?

Back

4

Front

3 + 3 = ?

Back

6

Front

5 + 5 = ?

Back

10

Front

6 + 2 = ?

Back

8