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一根鋼管長12分之3米,鋸下3分之一,還剩下多少米?
一根鋼管長12分之3米,鋸下3分之一,還剩下多少米?
更新时间:2024-08-28 16:18:41

  1、一根鋼管長12分之3米,鋸下3分之1,則鋸下:3/12×1/3=1/12(米);鋸下它的3分之一後,還剩下:3/12-1/12=2/12(米)。

  2、一根鋼管長12分之3米,鋸下3分之1,還剩下:3/12-3/12×1/3=2/12(米)。

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