Ｒちゃんのお家に行きました。
算数のお勉強です。今回、単位量当たりの数について初めて学びました！
単位量当たりの数
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単位量当たりの数 家庭教師ガッツ //esoulc.com/wp-content/uploads/2020/03/gsc-logo.png
