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27x18十82x27简算

=(37.8-7.8)x27=30x27=810

34x27+54x19+27x128= 34x27+2x27x19+27x128=27x(34+38+128)=27x200=5400

93x27十8x27一27=27x(93+8-1)=27X100=2700 希望对你有帮助,满意请及时采纳,你的采纳是我回答的动力!

27x99+27 =27x(99+1) =27x100 =2700

简便算法43x27十56x27十27=27x(43+ 56 + 1)=27x100=2700

二十七之二十八乘十九减二十七之十九=19/27*(28-1)=19/27*27=19

3.7X1.8一27x0.18=3.7X1.8一2.7x1.8=(3.7-2.7)x1.8=1.8

原式=16/23x(23+4)+19/23x(23-7)=16+64/23+19-133/23=35+(64/23-133/23)=35+(-69/23)=35-3=32

27x99+27 =270027x99+27=27x99+27x1=27x(99+1)=27x100

56x27+56x42+56x31=56x(27+42+31)=56x100=5600

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