| 1) | -869 − 382 = | 2) | -215 + 715 = | 3) | -590 − 278 = |
| 4) | -980 − 185 = | 5) | 729 − 675 = | 6) | 426 + 514 = |
| 1) | -869 − 382 = -1251 | 2) | -215 + 715 = 500 | 3) | -590 − 278 = -868 |
| 4) | -980 − 185 = -1165 | 5) | 729 − 675 = 54 | 6) | 426 + 514 = 940 |