Doubles + 1 (Mixed)

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