50×90×12的简便算法
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=4500除90乘12=50乘12=600追问
好像不对
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第1个回答 2017-04-11
50x90x12
=50x2x5x9x12
=100x60x9
=6000x9
=54000
=50x2x5x9x12
=100x60x9
=6000x9
=54000