Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

1. Calculate:

7 + 3 =

1 + 6 =

5 + 3 =

2 + 6 =

3 + 3 =

4 + 6 =

5 + 0 =

1 + 2 =

4 + 3 =

2 + 7 =



2. Calculate:

4 - 2 =

8 - 0 =

10 - 5 =

3 - 2 =

9 - 7 =

6 - 4 =

6 - 3 =

10 - 6 =

8 - 5 =

9 - 7 =