| 1) | 320 − 732 = | 2) | -90 − 720 = | 3) | -703 + 708 = |
| 4) | 67 + 760 = | 5) | -959 + 494 = | 6) | -578 − 577 = |
| 1) | 320 − 732 = -412 | 2) | -90 − 720 = -810 | 3) | -703 + 708 = 5 |
| 4) | 67 + 760 = 827 | 5) | -959 + 494 = -465 | 6) | -578 − 577 = -1155 |