几道分数计算题 帮下忙简便计算
3个回答
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2) 333又333/334+333-20%*5=665又333/334
2.
(1)1/6*(6.75/(5/12)-2.4+4又1/4*2又2/5)-1又1/8-0.875
=1/6*(1.35*12-2.4+17/4*12/5)-(9/8+7/8)
=1/6*(16.2-2.4+10.2)-1/4
=1/6*24-1/4
=4-1/4
=3.75
(2)3又146/285÷72又43/57÷2又11/145÷5/43
=(3又146/285)/[4147/57*301/145*5/43]
=1001/285/[4147*301/(57*29*43)]
=1001*57*29*43/(285*4147*301)
=1001*29/(5*4147*7)
=143*29/(5*4147)
=29/(5*29)
=1/5
2.
(1)1/6*(6.75/(5/12)-2.4+4又1/4*2又2/5)-1又1/8-0.875
=1/6*(1.35*12-2.4+17/4*12/5)-(9/8+7/8)
=1/6*(16.2-2.4+10.2)-1/4
=1/6*24-1/4
=4-1/4
=3.75
(2)3又146/285÷72又43/57÷2又11/145÷5/43
=(3又146/285)/[4147/57*301/145*5/43]
=1001/285/[4147*301/(57*29*43)]
=1001*57*29*43/(285*4147*301)
=1001*29/(5*4147*7)
=143*29/(5*4147)
=29/(5*29)
=1/5
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