| 1) | -524 − 727 = | 2) | -90 + 504 = | 3) | -272 + 383 = |
| 4) | -676 − 790 = | 5) | 45 − 197 = | 6) | -541 + 894 = |
| 1) | -524 − 727 = -1251 | 2) | -90 + 504 = 414 | 3) | -272 + 383 = 111 |
| 4) | -676 − 790 = -1466 | 5) | 45 − 197 = -152 | 6) | -541 + 894 = 353 |