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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| 7.9 + 9.6 = | 4.1 + 1.1 = | 9.0 + 2.0 = | 4.1 - 1.1 = |
| 9.5 + 1.8 = | 0.1 + 9.4 = | 9.7 - 7.2 = | 2.8 + 3.6 = |
| 8.1 - 2.0 = | 5.8 - 2.7 = | 9.0 - 2.0 = | 5.4 + 6.7 = |
| 6.3 - 5.3 = | 3.0 + 7.2 = | 2.3 - 0.8 = | 9.1 - 7.0 = |
| 3.0 - 2.7 = | 5.4 - 4.0 = | 9.7 - 4.2 = | 0.3 + 4.4 = |
| 3.1 - 2.4 = | 5.5 - 5.5 = | 9.7 + 7.2 = | 8.2 - 1.6 = |
| 3.9 - 1.4 = | 9.6 - 7.9 = | 0.1 + 5.7 = | 6.1 - 1.1 = |
| 3.2 - 1.3 = | 0.1 + 7.7 = | 3.2 + 1.3 = | 6.3 + 5.3 = |
| 9.5 - 1.8 = | 3.9 + 5.4 = | 5.1 + 9.5 = | 8.7 - 4.1 = |
| 2.2 + 6.7 = | 6.5 + 4.0 = | 3.1 + 2.4 = | 4.8 + 6.4 = |
| 8.8 - 2.1 = | 5.5 - 0.5 = | 6.5 - 4.0 = | 2.5 + 5.2 = |
| 1.5 + 7.8 = | 2.8 + 6.5 = | 9.1 + 7.0 = | 9.0 + 9.2 = |
| 9.8 - 2.8 = | 3.4 - 1.5 = |
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