| 1) | 559 + 388 = | 2) | -129 − 89 = | 3) | 204 − 331 = |
| 4) | 937 + 269 = | 5) | 569 − 993 = | 6) | -127 + 682 = |
| 1) | 559 + 388 = 947 | 2) | -129 − 89 = -218 | 3) | 204 − 331 = -127 |
| 4) | 937 + 269 = 1206 | 5) | 569 − 993 = -424 | 6) | -127 + 682 = 555 |