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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| 12 + 9 × 5 = | 20 - 2 × 7 = | 65 + 4 × 7 = | 55 - 2 × 8 = |
| 38 - 6 × 4 = | 23 + 8 × 9 = | 5 × 3 + 61 = | 23 + 9 × 7 = |
| 7 × 2 - 10 = | 87 - 3 × 7 = | 7 × 8 + 15 = | 63 + 4 × 7 = |
| 7 × 6 - 19 = | 3 × 4 - 10 = | 73 - 8 × 9 = | 7 × 2 - 13 = |
| 9 × 9 - 69 = | 15 + 9 × 8 = | 8 × 9 + 27 = | 2 × 7 + 39 = |
| 6 × 3 + 38 = | 25 - 9 × 2 = | 9 × 9 + 17 = | 5 × 6 + 43 = |
| 51 + 5 × 2 = | 31 + 6 × 3 = | 54 - 2 × 7 = | 29 + 8 × 2 = |
| 4 × 6 - 11 = | 7 × 4 + 63 = | 16 + 6 × 7 = | 52 + 9 × 3 = |
| 75 - 4 × 8 = | 7 × 2 - 13 = | 8 × 7 + 40 = | 60 + 2 × 6 = |
| 9 × 4 - 12 = | 5 × 7 - 16 = | 4 × 5 - 17 = | 47 + 8 × 3 = |
| 2 × 6 - 11 = | 8 × 2 - 13 = | 9 × 4 - 17 = | 20 + 3 × 4 = |
| 61 + 7 × 3 = | 8 × 9 - 65 = | 25 + 4 × 5 = | 5 × 3 + 74 = |
| 21 + 9 × 7 = | 7 × 5 - 31 = | 60 - 8 × 7 = | 98 - 7 × 4 = |
| 8 × 5 + 21 = | 93 - 4 × 9 = | 30 + 8 × 3 = | 90 - 9 × 8 = |
| 29 + 7 × 9 = | 70 - 6 × 3 = | 9 × 7 + 33 = | 33 + 2 × 9 = |
| 3 × 9 - 23 = | 2 × 8 - 13 = | 7 × 9 - 12 = | 71 - 4 × 9 = |
| 10 + 9 × 9 = | 4 × 8 + 43 = | 80 - 3 × 4 = | 9 × 4 - 11 = |
| 9 × 6 - 40 = | 29 - 9 × 3 = | 93 - 6 × 7 = | 98 - 7 × 9 = |
| 3 × 5 + 42 = | 68 + 4 × 7 = | 7 × 7 + 12 = | 9 × 9 + 12 = |
| 71 + 4 × 5 = | 3 × 8 - 11 = | 8 × 5 + 40 = | 9 × 6 - 39 = |
| 6 × 5 + 20 = | 14 + 3 × 7 = | 55 + 4 × 6 = | 7 × 2 + 53 = |
| 10 + 3 × 7 = | 3 × 6 - 10 = | 65 - 7 × 3 = | 38 + 8 × 4 = |
| 9 × 6 + 27 = | 5 × 4 - 15 = | 6 × 9 + 40 = | 9 × 2 - 14 = |
| 29 + 7 × 3 = | 60 - 2 × 7 = | 62 + 4 × 3 = | 8 × 6 + 42 = |
| 45 + 9 × 4 = | 8 × 7 - 30 = | 9 × 4 + 51 = | 6 × 7 - 25 = |
消防员爸爸