| 1) | -181 + 359 = | 2) | -31 − 72 = | 3) | 70 − 902 = |
| 4) | 62 − 636 = | 5) | -335 − 453 = | 6) | -579 + 354 = |
| 1) | -181 + 359 = 178 | 2) | -31 − 72 = -103 | 3) | 70 − 902 = -832 |
| 4) | 62 − 636 = -574 | 5) | -335 − 453 = -788 | 6) | -579 + 354 = -225 |