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