| 1) | -602 − 961 = | 2) | 672 − 195 = | 3) | -343 + 736 = |
| 4) | -167 − 318 = | 5) | 613 + 424 = | 6) | 840 + 444 = |
| 1) | -602 − 961 = -1563 | 2) | 672 − 195 = 477 | 3) | -343 + 736 = 393 |
| 4) | -167 − 318 = -485 | 5) | 613 + 424 = 1037 | 6) | 840 + 444 = 1284 |