| 1) | -221 − 31 = | 2) | 901 + 117 = | 3) | -171 + 262 = |
| 4) | 536 + 949 = | 5) | -228 − 615 = | 6) | -380 − 737 = |
| 1) | -221 − 31 = -252 | 2) | 901 + 117 = 1018 | 3) | -171 + 262 = 91 |
| 4) | 536 + 949 = 1485 | 5) | -228 − 615 = -843 | 6) | -380 − 737 = -1117 |