| 1) | -245 + 265 = | 2) | 839 − 818 = | 3) | 84 − 104 = |
| 4) | -678 − 929 = | 5) | -712 − 273 = | 6) | -16 + 533 = |
| 1) | -245 + 265 = 20 | 2) | 839 − 818 = 21 | 3) | 84 − 104 = -20 |
| 4) | -678 − 929 = -1607 | 5) | -712 − 273 = -985 | 6) | -16 + 533 = 517 |