| 1) | 12 + 4 + -9 | 2) | -3 + 7 + -5 |
| 3) | -2 + 1 - -7 | 4) | 10 + 4 + -8 |
| 5) | -9 - -1 + 13 | 6) | -8 - -3 - -1 |
| 7) | -7 - -9 - 0 | 8) | 5 - -5 - -19 |
| 9) | 9 + 10 + -16 | 10) | 3 + 3 + -13 |
| 11) | -11 + 4 + 6 | 12) | -6 - -4 - -18 |
| 13) | -1 + 4 + 19 | 14) | 7 + 1 - -7 |
| 15) | 14 + 8 + -13 | 16) | -3 + 6 + -10 |
| 17) | 14 - -2 - 14 | 18) | 1 - -9 - -9 |
| 19) | 11 - -7 - 12 | 20) | -7 - -5 - 15 |
| 21) | -2 - -4 - -2 | 22) | 14 + 7 + -11 |
| 23) | 7 + 8 + -17 | 24) | 7 + 8 + 21 |
| 25) | -8 - -9 - 18 | 26) | 13 - -10 - 16 |
| 27) | -9 - -10 - 19 | 28) | -6 - -4 - 3 |
| 29) | 7 - -10 - 13 | 30) | -11 - -7 - 13 |
| 31) | -6 + 8 + -7 | 32) | -3 + 4 + -6 |
| 33) | 5 + 4 + -19 | 34) | -12 - -5 - 19 |
| 35) | 5 + 4 + 15 | 36) | 5 + 5 + 6 |
| 37) | -5 + 3 + 19 | 38) | -2 - -2 - 3 |
| 39) | -11 - -3 - 24 | 40) | -8 - -9 - 4 |
Joke:
Terry shouted at his stubborn public-school-boy son: 'I pay thousands of pounds to your schoolmasters; but your classmates seem to be your mentors!'