1. 3 + 5 = 8

2. 5 + 4 = 9

3. 5 + 5 = 10

4. 6 + 3 = 9

5. 4 + 4 = 8

6. 7 + 4 - 2 = 9

7. 15 + 20 = 35

8. 35 + 56 = 91

9. 65 -23 = 42

10.89 - 45 = 44