Sample One Digit Addition

1. 2 + 3
Answer : .
2. 2 + 2
Answer : .
3. 5 + 7
Answer : .
4. 4 + 5
Answer : .
5. 7 + 6
Answer : .
6. 4 + 8
Answer : .
7. 3 + 6
Answer : .
8. 5 + 6
Answer : .
9. 7 + 8
Answer : .
10.7 + 7
Answer : .