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数与代数

数与代数. 执教老师：王幼彩. 计算结果如下：. 学校买了一捆电线，第一次用去 999.8 米， 第二次用去 米，第三次用去 米，还剩 米。. 请选择 能简算 的题目进行计算。. 你能巧算下面两题吗？.

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数与代数

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  1. 数与代数 执教老师：王幼彩

  2. 计算结果如下：

  3. 学校买了一捆电线，第一次用去 999.8米， 第二次用去 米，第三次用去 米，还剩 米。

  4. 请选择能简算的题目进行计算。

  5. 你能巧算下面两题吗？

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