| 1) | 138 − 951 = | 2) | -918 + 904 = | 3) | 19 − 564 = |
| 4) | 454 − 167 = | 5) | -25 + 127 = | 6) | 633 + 701 = |
| 1) | 138 − 951 = -813 | 2) | -918 + 904 = -14 | 3) | 19 − 564 = -545 |
| 4) | 454 − 167 = 287 | 5) | -25 + 127 = 102 | 6) | 633 + 701 = 1334 |