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5/2一5/12一1/6 除以2/8用简便方法计算

5/2-5/12-1/6 除以2/8用简便方法计算 5/2-5/12-1/6 ÷2/8 =25/12-2/3 =17/12

2×1/6÷(5/8) =1/3x8/5 =8/15 这题没有简便方法

主要还是 通分计算【您的采纳,我的荣耀】

21点6除以0.8减1.2乘5的简便方法怎么算。 解: 直接运算最简便, 原式=21.6÷0.8-1.2x5 =27-6 =21

答:21.6÷0.8-1.2×5=27-6=21

6/7乘(7/12)等于5/12除以(5/6)等于7/8除以(7/4)等于(5/16)乘5/32等于1/2

201x45 =(200+1)x45 =200x45+1x45 =9000+45 =9045 24乘(3/8+1/6-1/12) =24x3/8+24x1/6-24x1/12 =9+4-2 =11

1/6+1/3×9/15 =1/6+1/15 =5/30+2/30 =7/30 (3/8+5/12)x24 =3/8*24+5/12*24 =9+10 =19 35除以[(11/6-2/3)]x24 =35÷5/6×24 =42×24 =1008 (4/3-3/5)除以3/4 =(20/15-9/15)÷3/4 =11/15×4/3 =44/45 5x4/5除以5x4/5 =(5÷5)×(4/5×4/5) =1×16/25 =16...

1/6×2/3÷(5分之5-8/15) =1/6×2/3÷7/15 =1/9÷7/15 =5/21

解:1. 2X一2/7二5/8x,2x一5/8x=2/7,11/8x=2/7, x=16/77。 2.(1)原式=2-2(1/6+3/8)=2-(1/3+3/4)=2-1=1 (2)原式=27(4/9-3/16)=12-81/16=192/16-81/16 =111/16 3、设这本书一共有x页,则有1/6x十12十2/5x一10十12...

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