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