小六數學教學影片-濃度與百分率 例題2-葉傅(呀呼)老師

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Uploaded by on Aug 5, 2011

三隻小豬體重共100公斤,豬弟比豬妹重20%,豬哥比豬妹重
80%,問三隻小豬體重各多少公斤?

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Education

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  • 謝謝你..我們會再改進!!~

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