| 1) | -248 − 414 = | 2) | -888 − 453 = | 3) | -892 − 917 = |
| 4) | 716 + 199 = | 5) | -227 + 142 = | 6) | 280 − 880 = |
| 1) | -248 − 414 = -662 | 2) | -888 − 453 = -1341 | 3) | -892 − 917 = -1809 |
| 4) | 716 + 199 = 915 | 5) | -227 + 142 = -85 | 6) | 280 − 880 = -600 |