| 1) | 968 + 512 = | 2) | -694 + 957 = | 3) | -400 + 730 = |
| 4) | 271 − 968 = | 5) | -780 − 289 = | 6) | -980 − 658 = |
| 1) | 968 + 512 = 1480 | 2) | -694 + 957 = 263 | 3) | -400 + 730 = 330 |
| 4) | 271 − 968 = -697 | 5) | -780 − 289 = -1069 | 6) | -980 − 658 = -1638 |