| 1) | 742 + 97 = | 2) | -486 + 366 = | 3) | -260 − 985 = |
| 4) | 702 + 991 = | 5) | 227 + 256 = | 6) | -664 − 858 = |
| 1) | 742 + 97 = 839 | 2) | -486 + 366 = -120 | 3) | -260 − 985 = -1245 |
| 4) | 702 + 991 = 1693 | 5) | 227 + 256 = 483 | 6) | -664 − 858 = -1522 |