adding and subtracting

Front

0 + 5 = ?

Back

5

Front

6 + 0 = ?

Back

6

Front

4 + 4 = ?

Back

8

Front

3 + 3 = ?

Back

6

Front

6 - 1 = ?

Back

5

Front

1 + 1 = ?

Back

2

Front

2 + 2 = ?

Back

4

Front

5 - 2 = ?

Back

3

Front

7 - 3 = ?

Back

4

Front

8 + 1 = ?

Back

9