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1.25x4.34x4.34怎样简便计算
1.25x4x2x(0.34x2)
人气:236 ℃ 时间:2020-09-28 22:35:47
解答
1.25x4x2x(0.34x2)
=1.25*8*(0.34*2)
=10*(0.34*2)
=0.68*10
=6.8
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