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Watch Later 11:10

2下A第1課3_象形圖（二）

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2下A第12課_象形圖（一）

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2下A第12課/第13課_練習答案

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4下A第7課(第一節)_分數的種類

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4下A第7課(第二節)_假分數及帶分數互化

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4下A第8課(第一節) 擴分和約分

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六數_ 百分率的應用三

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六數_ 百分率的應用二

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