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跪求答案數學問題

Aug 21st 2013, 15:29

題目6÷2(1+2)

★原則：由左至右計算，先乘除後加減。

★步驟1：小括號內的(1+2)要先算，結果得3

★步驟2：再回到原算式，乘、除號位階相等，自左至右計算為6÷2(3)=9

故此題答案為9

參考資料 http://www.e-zone.com.hk/discuz/viewthread.php?tid=39520

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