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目で見る算数

All videos
¥ 680 (1 month)
All videos
¥ 680 (1 month)

チョコレート計算機

目で見る算数

分数どうしのかけ算の計算です。この問題を解くために「チョコレート計算機」の登場です!板チョコ1枚を1として考えてみると…。

All videos
¥ 680 (1 month)
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