| 1) | 770 + 126 = | 2) | 941 + 52 = | 3) | 206 − 46 = |
| 4) | 894 + 354 = | 5) | 492 − 409 = | 6) | -378 + 354 = |
| 1) | 770 + 126 = 896 | 2) | 941 + 52 = 993 | 3) | 206 − 46 = 160 |
| 4) | 894 + 354 = 1248 | 5) | 492 − 409 = 83 | 6) | -378 + 354 = -24 |