| 1. 6 − (52
+ 2) − 7 = -28 |
2. 13 −
(3 − 6 − 3) = 7 |
| 3. (7 + 6) × 1
= 13 |
4. (6 − 3) −
9 = -6 |
| 5. (9 + 7) −
8 + 5 = 13 |
6. (22 +
3) + 6 = 13 |
| 7. (9 + 9) + 3 = 21 |
8. (1 × 63)
+ (3 + 4) − 8 = 215 |
| 9. (92 +
6) + 9 = 96 |
10. 7 − (22
+ 8 − 9 + 8) = -4 |
| 11. 7 + (63
× 73 + 5) − 7 = 74093 |
12. (33
× 22 × 6) + 7 = 655 |
| 13. (93
+ 72) + 9 × 4 = 814 |
14. (63
− 2 + 7) = 221 |
| 15. (2 − 6) +
(9 × 33 + 3) = 242 |
16. (6 + 93
× 3) = 2193 |
| 17. (13
× 8 + 3 × 7 − 7) = 22 |
18. (4 − 42)
+ (2 × 9 + 1) = 7 |
| 19. (73
+ 8) × 43 × 2 = 44928 |
20. (5 × 7 + 7)
= 42 |