| 1) | -153 − 949 = | 2) | 330 + 503 = | 3) | -351 + 925 = |
| 4) | -901 − 588 = | 5) | -520 + 990 = | 6) | 909 − 292 = |
| 1) | -153 − 949 = -1102 | 2) | 330 + 503 = 833 | 3) | -351 + 925 = 574 |
| 4) | -901 − 588 = -1489 | 5) | -520 + 990 = 470 | 6) | 909 − 292 = 617 |