| 1) | -771 − 216 = | 2) | 561 − 431 = | 3) | 748 − 784 = |
| 4) | 38 + 843 = | 5) | -653 + 90 = | 6) | 838 + 811 = |
| 1) | -771 − 216 = -987 | 2) | 561 − 431 = 130 | 3) | 748 − 784 = -36 |
| 4) | 38 + 843 = 881 | 5) | -653 + 90 = -563 | 6) | 838 + 811 = 1649 |