0's Addition

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