【章魚數學營】「倍數」(上集)證明如何判斷3,6,9,27的倍數?
Synopsis
這好像是我拍過最簡單的數學影片原本要講2,4,5,8,10的倍數，但是太簡單就不浪費時間了! 0:00 3的倍數2:27 9的倍數2:42 6的 ...
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