1. 4 - 3 = 1

2. 5 + 5 = 10

3. 5 × 2 = 10

4. 16 + 10 = 26

5. 5 × 10 = 50

6. 4 × 1 = 4

7. 5 × 7 = 35

8. 1 × 3 = 3

9. 10 × 9 = 90

10. 70 ÷ 7 = 10

11. 9 × 9 = 81

12. 6 × 8 = 48

13. 16 ÷ 4 = 4

14. 6 + 5 = 11

15. 20 + 9 = 29

16. 10 + 1 = 11

17. 2 - 1 = 1

18. 19 - 18 = 1

19. 10 × 6 = 60

20. 4 - 1 = 3