| 1) | -860 + 976 = | 2) | 215 − 978 = | 3) | 488 − 264 = |
| 4) | -910 − 458 = | 5) | -558 − 434 = | 6) | 685 − 641 = |
| 1) | -860 + 976 = 116 | 2) | 215 − 978 = -763 | 3) | 488 − 264 = 224 |
| 4) | -910 − 458 = -1368 | 5) | -558 − 434 = -992 | 6) | 685 − 641 = 44 |