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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| 6.0 - 0.6 = | 8.4 - 2.4 = | 3.8 + 5.4 = | 3.7 + 8.7 = |
| 3.7 + 7.2 = | 8.3 + 6.5 = | 3.3 - 2.1 = | 7.8 + 8.6 = |
| 4.8 - 2.7 = | 8.7 - 2.5 = | 8.7 + 7.5 = | 6.1 - 5.4 = |
| 3.2 + 5.1 = | 1.9 + 5.2 = | 8.7 + 2.5 = | 3.0 + 2.7 = |
| 7.0 - 3.8 = | 3.9 - 1.3 = | 7.7 - 1.6 = | 2.2 + 1.0 = |
| 9.0 - 7.6 = | 9.0 + 7.6 = | 8.1 + 4.3 = | 8.7 - 7.5 = |
| 8.1 - 6.1 = | 3.9 + 8.0 = | 4.2 + 1.4 = | 3.6 + 7.0 = |
| 5.1 + 5.9 = | 8.3 - 6.5 = | 7.0 + 3.8 = | 4.9 + 5.7 = |
| 4.2 - 1.4 = | 9.8 - 5.3 = | 7.3 + 7.3 = | 3.9 - 2.6 = |
| 5.2 + 3.7 = | 3.6 + 7.5 = | 6.0 + 0.6 = | 3.0 - 2.7 = |
| 5.2 - 3.7 = | 5.2 + 3.0 = | 7.3 - 7.3 = | 2.2 - 1.0 = |
| 5.2 - 3.0 = | 5.6 - 3.5 = | 9.2 - 4.8 = | 4.8 + 2.7 = |
| 8.9 - 0.3 = | 8.1 - 4.3 = |
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