初一的几道计算题-3又5/8+3又1/12-19/8-25/12(1又4/5-2又5/6+3又7/10-4又8/15)÷?
1个回答
展开全部
-3又5/8+3又1/12-19/8-25/12
=-29/8-19/8+37/12-25/12
=-48/8+12/12
=-6+1
=-5
(1又4/5-2又5/6+3又7/10-4又8/15)/(-1/30)
=(1又4/5-2又5/6+3又7/10-4又8/15)×(-30)
=-1又4/5×30+2又5/6×30-3又7/10×30+4又8/15×30
=-54+85-111+136
=56
[(1-1/3)的2次方-(-1又2/3)÷(-1又1/8)]×(-1又1/2)的3次方
=[(2/3)的2次方-(-5/3)÷(-9/8)]×(-27/8)
=[4/9-40/27]×(-27/8)
=-4/9×27/8+40/27×27/8
=-1.5+5
=3.5,5,我都不会了,,,,2,[(1-1/3)的2次方-(-1又2/3)÷(-1又1/8)]×(-1又1/2)的3次方
=[(2/3)的2次方-(-5/3)÷(-9/8)]×(-27/8)
=[4/9-40/27]×(-27/8)
=-4/9×27/8+40/27×27/8
=-1.5+5
=3.5,1,这种题没有捷径,熟能生巧,0,初一的几道计算题
-3又5/8+3又1/12-19/8-25/12
(1又4/5-2又5/6+3又7/10-4又8/15)÷(-1/30)
[(-1-1/3)²-(1又2/3)÷(1又1/8)]×(-1又1/2)³
=-29/8-19/8+37/12-25/12
=-48/8+12/12
=-6+1
=-5
(1又4/5-2又5/6+3又7/10-4又8/15)/(-1/30)
=(1又4/5-2又5/6+3又7/10-4又8/15)×(-30)
=-1又4/5×30+2又5/6×30-3又7/10×30+4又8/15×30
=-54+85-111+136
=56
[(1-1/3)的2次方-(-1又2/3)÷(-1又1/8)]×(-1又1/2)的3次方
=[(2/3)的2次方-(-5/3)÷(-9/8)]×(-27/8)
=[4/9-40/27]×(-27/8)
=-4/9×27/8+40/27×27/8
=-1.5+5
=3.5,5,我都不会了,,,,2,[(1-1/3)的2次方-(-1又2/3)÷(-1又1/8)]×(-1又1/2)的3次方
=[(2/3)的2次方-(-5/3)÷(-9/8)]×(-27/8)
=[4/9-40/27]×(-27/8)
=-4/9×27/8+40/27×27/8
=-1.5+5
=3.5,1,这种题没有捷径,熟能生巧,0,初一的几道计算题
-3又5/8+3又1/12-19/8-25/12
(1又4/5-2又5/6+3又7/10-4又8/15)÷(-1/30)
[(-1-1/3)²-(1又2/3)÷(1又1/8)]×(-1又1/2)³
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询