| 1) | -644 + 322 = | 2) | -78 + 562 = | 3) | 661 − 354 = |
| 4) | 592 + 782 = | 5) | 571 + 885 = | 6) | -594 + 277 = |
| 1) | -644 + 322 = -322 | 2) | -78 + 562 = 484 | 3) | 661 − 354 = 307 |
| 4) | 592 + 782 = 1374 | 5) | 571 + 885 = 1456 | 6) | -594 + 277 = -317 |