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人教版正负数是哪个年级开始学的
更新时间: 2020-09-15 00:00:00  

一般情况,正负数是在初中开始教代数开始教的,但是部分数学奥林匹克或者其他竞赛班会在小学四五年级就教授代数式以及正负数的计算。

关键词: 人教 负数 哪个 年级 开始

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