| 1) | 517 + 636 = | 2) | 384 + 12 = | 3) | -630 − 193 = |
| 4) | -238 − 515 = | 5) | 304 + 809 = | 6) | -272 − 393 = |
| 1) | 517 + 636 = 1153 | 2) | 384 + 12 = 396 | 3) | -630 − 193 = -823 |
| 4) | -238 − 515 = -753 | 5) | 304 + 809 = 1113 | 6) | -272 − 393 = -665 |