小明做得对吗

  • 时间:2020-04-27 15:03:15
  • 分类:数学世界
  • 阅读:142 次

小明做得对吗?小明是个聪明勤奋的好孩子。

这段时间,他学习了“商不变的性质”,感到很高兴,因为有些题如果应用这种规律来做,会非常简便和轻松!这天,小明在计算900÷40时想,因为900÷40=90÷4,而90÷4=22……2,所以900÷40=22……2。

“这样做,真是太快了!”小明兴奋地想。

同学们,你认为他做得 对吗?

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