| 1) | -978 − 102 = | 2) | 366 + 406 = | 3) | -611 + 646 = |
| 4) | -656 − 688 = | 5) | 54 + 949 = | 6) | 243 − 288 = |
| 1) | -978 − 102 = -1080 | 2) | 366 + 406 = 772 | 3) | -611 + 646 = 35 |
| 4) | -656 − 688 = -1344 | 5) | 54 + 949 = 1003 | 6) | 243 − 288 = -45 |