| 1) | -4 - -9 - -23 | 2) | 5 - -8 - 10 |
| 3) | 6 + 4 + -17 | 4) | 6 - -4 - -16 |
| 5) | 1 - -3 - -3 | 6) | 2 + 3 + 7 |
| 7) | 6 - -3 - 0 | 8) | 5 + 5 + 4 |
| 9) | -4 + 1 - 23 | 10) | 6 - -4 - -10 |
| 11) | 13 + 5 + 19 | 12) | 2 + 2 + -21 |
| 13) | 3 + 3 + 16 | 14) | -11 - -4 - -16 |
| 15) | 13 + 2 + -19 | 16) | 7 + 7 + 10 |
| 17) | -8 - -4 - 3 | 18) | -3 + 6 + 12 |
| 19) | 3 - -4 - 20 | 20) | -8 + 9 + -23 |
| 21) | -5 - -8 - -2 | 22) | -8 + 1 - 2 |
| 23) | -11 + 6 + -3 | 24) | -2 - -1 + -14 |
| 25) | -6 - -9 - -9 | 26) | 14 - -5 - -7 |
| 27) | 14 - -7 - 18 | 28) | 12 - -5 - -13 |
| 29) | -1 - -2 - 13 | 30) | 10 - -5 - 17 |
| 31) | 9 - -1 + -1 | 32) | 9 - -9 - -2 |
| 33) | 14 - -1 + -9 | 34) | -6 + 4 + -15 |
| 35) | 13 - -4 - 4 | 36) | 4 - -10 - 15 |
| 37) | 5 - -1 + 1 | 38) | -2 + 6 + 7 |
| 39) | -6 - -10 - -22 | 40) | 13 - -1 + -20 |
Joke:
If your father was a mathematician, he would warn you in the form of 'I told you n times; and I told you n+1 times' and so on!