1. 1 + 2 = 3

2. 3 + 1 = 4

3. 2 + 2 = 4

4. 3 + 2 = 5

5. 5 + 5 = 10

6. 1 + 5 = 6

7. 5 + 1 = 6

8. 4 + 3 = 7

9. 2 + 5 = 7

10. 3 + 3 = 6

11. 5 + 4 = 9