| 1) | 779 − 422 = | 2) | -637 + 989 = | 3) | 682 − 303 = |
| 4) | -963 − 557 = | 5) | 269 + 60 = | 6) | 165 + 33 = |
| 1) | 779 − 422 = 357 | 2) | -637 + 989 = 352 | 3) | 682 − 303 = 379 |
| 4) | -963 − 557 = -1520 | 5) | 269 + 60 = 329 | 6) | 165 + 33 = 198 |