小学数学乘法｜李先生卖掉了9碗面条 | 小学数学教学法｜我是荐书官
Synopsis
李先生卖掉了9碗面条，如果每碗面条卖3元，那么李先生一共能赚多少钱？ 影片章节： 00:00 题目00:50 算法一01:07 算法二01:37 ...
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