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555×555+666×666+888×888-444×444-333×333=◯×100
これはどうやって計算の工夫をしますか?
教えてください。
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555×555+666×666+888×888-444×444-333×333=◯×100
これはどうやって計算の工夫をしますか?
教えてください。
No answer yet
Users viewing this question
are also looking at these questions 😉