| 1) | 218 + 669 = | 2) | -300 − 224 = | 3) | -827 + 837 = |
| 4) | -164 − 988 = | 5) | 823 − 284 = | 6) | 606 + 133 = |
| 1) | 218 + 669 = 887 | 2) | -300 − 224 = -524 | 3) | -827 + 837 = 10 |
| 4) | -164 − 988 = -1152 | 5) | 823 − 284 = 539 | 6) | 606 + 133 = 739 |