Mathematics
Senior High
Resolved
この計算を工夫したいのですが、すぐにできる方法教えてください!
(1)60×30
(2)380×40
(3)47×360
(4)290×390
(5)430×108
(6)987×307
(7)90012×10101
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ご丁寧にありがとうございます!とてもわかりやすかったです!