| 1) | 855 − 466 = | 2) | -510 + 47 = | 3) | -418 − 807 = |
| 4) | -844 + 205 = | 5) | 801 + 696 = | 6) | 778 − 231 = |
| 1) | 855 − 466 = 389 | 2) | -510 + 47 = -463 | 3) | -418 − 807 = -1225 |
| 4) | -844 + 205 = -639 | 5) | 801 + 696 = 1497 | 6) | 778 − 231 = 547 |