| 1) | 80 − 731 = | 2) | 330 + 42 = | 3) | -608 + 313 = |
| 4) | -592 − 86 = | 5) | 427 + 651 = | 6) | 876 + 29 = |
| 1) | 80 − 731 = -651 | 2) | 330 + 42 = 372 | 3) | -608 + 313 = -295 |
| 4) | -592 − 86 = -678 | 5) | 427 + 651 = 1078 | 6) | 876 + 29 = 905 |