| 1) | 87 − 668 = | 2) | -285 − 682 = | 3) | 466 + 728 = |
| 4) | -142 + 849 = | 5) | 800 − 566 = | 6) | -589 − 453 = |
| 1) | 87 − 668 = -581 | 2) | -285 − 682 = -967 | 3) | 466 + 728 = 1194 |
| 4) | -142 + 849 = 707 | 5) | 800 − 566 = 234 | 6) | -589 − 453 = -1042 |