1) | 7 − 8 = | 2) | 3 − 10 = | 3) | 8 + 5 = | 4) | 7 − 10 = |
5) | 10 + 8 = | 6) | -7 + 8 = | 7) | 6 − 6 = | 8) | 3 + 1 = |
1) | 7 − 8 = -1 | 2) | 3 − 10 = -7 | 3) | 8 + 5 = 13 | 4) | 7 − 10 = -3 |
5) | 10 + 8 = 18 | 6) | -7 + 8 = 1 | 7) | 6 − 6 = 0 | 8) | 3 + 1 = 4 |