| 1) | 626 − 947 = | 2) | -694 + 292 = | 3) | 348 + 300 = |
| 4) | 633 + 863 = | 5) | 167 − 248 = | 6) | -143 + 697 = |
| 1) | 626 − 947 = -321 | 2) | -694 + 292 = -402 | 3) | 348 + 300 = 648 |
| 4) | 633 + 863 = 1496 | 5) | 167 − 248 = -81 | 6) | -143 + 697 = 554 |