國一上｜數學1-3《正負數的乘除》36min深度對談：如何聰明算數學？善用交換律、結合律與分配律的計算魔法｜《ten叔叔的數學好好聽》

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你是否也曾對「負負得正」這個規則感到困惑？為什麼兩個負數相乘，結果竟然會變成正數？歡迎來到《Ten叔叔的數學好好聽》！

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