百分数与分数、小数的互化方法

  • 时间:2020-04-18 15:05:39
  • 分类:数学世界
  • 阅读:110 次

分数与分数、小数的互化方法:1.把小数化成百分数和把百分数化成小数的方法:把小数化成百分数,只要把小数点向右移动两位,同时在后面添上百分号;把百分数化成小数,把百分号去掉,同时小数点向左移动两位。

2.把分数化成百分数和把百分数化成分数的方法:把分数化成百分数,通常先把分数化成小数(除不尽通常保留三位小数),再把小数化成百分数;把百分数化成分数,先把百分数改写成分母是100 的分数,能约分的要约成最简分数。

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