| 1) | 286 − 66 = | 2) | -749 − 313 = | 3) | -352 + 778 = |
| 4) | 616 − 959 = | 5) | -409 + 973 = | 6) | 979 − 965 = |
| 1) | 286 − 66 = 220 | 2) | -749 − 313 = -1062 | 3) | -352 + 778 = 426 |
| 4) | 616 − 959 = -343 | 5) | -409 + 973 = 564 | 6) | 979 − 965 = 14 |