Subtracting 0

Gap-fill exercise

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. 1 - 0 =
2. 2 - 0 =
3. 3 - 0 =
4. 4 - 0 =
5. 5 - 0 =
6. 6 - 0 =
7. 7 - 0 =
8. 8 - 0 =
9. 9 - 0 =
10. 10 - 0 =