谁是单位“1”?(六上数学题)
- 时间:2020-04-19 17:13:52
- 分类:数学世界
- 阅读:135 次
谁是单位“1”?(六上数学题)

在这个题目的最后一问中,谁是单位“1”?应该如何解答?
按照学习分数应用题的方法,应把比后面的看作单位“1”,即应把舞蹈类节目看作单位“1”,由此得出算法为:
(44%-32%)÷32%=37.5%
或者写成:
44%÷32% – 1=37.5%
而不能简单地理解成相减,解答成:
44%-32%=12%
如果用最后的算式作答,那么问题应是:“歌唱类节目比舞蹈类节目多节目总数的百分之几?”
只有这样问,才是以节目总数为单位“1”。
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