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跟着消防员爸爸学习C++编程与算法（请备注算法学习）
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| 47 + 43 = | 100 - 56 = | 70 + 27 = | 63 - 57 = |
| 59 - 48 = | 81 - 72 = | 50 + 43 = | 13 + 84 = |
| 90 - 54 = | 94 - 72 = | 84 - 26 = | 34 + 14 = |
| 59 + 41 = | 87 - 20 = | 77 + 13 = | 90 - 82 = |
| 22 + 65 = | 13 + 86 = | 86 - 37 = | 66 - 59 = |
| 90 - 18 = | 87 - 35 = | 92 - 89 = | 44 + 38 = |
| 66 + 34 = | 95 - 67 = | 59 + 17 = | 55 - 53 = |
| 59 - 51 = | 29 + 29 = | 48 + 32 = | 48 - 33 = |
| 79 + 11 = | 89 - 54 = | 53 + 47 = | 13 + 15 = |
| 89 - 57 = | 49 + 42 = | 98 - 93 = | 29 + 23 = |
| 40 + 52 = | 12 + 85 = | 42 + 56 = | 68 - 15 = |
| 30 + 26 = | 69 + 31 = | 85 - 73 = | 38 + 40 = |
| 93 - 66 = | 63 - 44 = |