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:

2 + 1 =

4 + 1 =

2 + 3 =

0 + 4 =

1 + 2 =

1 + 3 =

2 + 2 =

1 + 1 =

2 + 5 =

4 + 1 =

3 + 3 =

7 + 2 =



2. Calculate:

9 - 7 =

7 - 6 =

8 - 3 =

9 - 2 =

8 - 6 =

8 - 4 =

4 - 3 =

6 - 2 =

8 - 6 =

1 - 1 =

9 - 8 =

6 - 3 =