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今日の計算クイズ 答え
↓https://nlab.itmedia.co.jp//nl/articles/2401/12/news006_2.html,photo,
【解説】31×12+12×29=31×12+29×12=(31+29)×12=60×12=720
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Copyright © ITmedia, Inc. All Rights Reserved.
↓https://nlab.itmedia.co.jp//nl/articles/2401/12/news006_2.html,photo,
【解説】31×12+12×29=31×12+29×12=(31+29)×12=60×12=720
Copyright © ITmedia, Inc. All Rights Reserved.