| 1) | 89 − 770 = | 2) | -999 − 787 = | 3) | 791 + 203 = |
| 4) | 271 − 32 = | 5) | -577 + 201 = | 6) | -700 + 375 = |
| 1) | 89 − 770 = -681 | 2) | -999 − 787 = -1786 | 3) | 791 + 203 = 994 |
| 4) | 271 − 32 = 239 | 5) | -577 + 201 = -376 | 6) | -700 + 375 = -325 |