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简算 2005乘以8分之30.375+1949+3.75乘以10.4

=2005*0.375-0.375+1949+0.375*104=0.375*(2005-1+104)+1949=0.375*2108+1949=790.5+1949=2739.5

=2005*0.375-0.375+1949+0.375*104=0.375*(2005-1+104)+1949=0.375*2108+1949=790.5+1949=2739.5

2005*0.375-0.375*1949+3.75*2.4=2005*0375-1949*0.375+24*0.375=(2005-1949+24)*0.375=80*0.375=80*3/8=30

2005*3/8-1949÷8/3+15/4*10.4=2005*3/8-1949*3/8+15/4*10.4=(2005-1949)*3/8+15/4*52/5=56*3/8+42=21+42=63

(3/8=0.375 ) 所以原式=0.375(2005-1949+10乘2.4)=0.375乘80=30

2005*3/8-1949÷2又2/3+3又3/4*10.4 =2005*3/8-1949*3/8+15/4*52/5 =(2005-1949)*3/8+39 = 56*3/8+39 =21+39 =60

2005乘8分之3减1949除以2又2分之3加上3又4分之3乘以10.4=2005*3/8-1949*3/8+15/4*10.4=(2005-1949)*3/8+39=56*3/8+39=21+39=60

你好!2.15-3.75*10%-8分之5(2.15-(3.75乘以0.1+0.625)=2.15-1=1.15 我的回答你还满意吗~~

题目应是八分之七乘5.25+3.75/8+0.125=7/8*21/4+15/4/8+1/8=147/32+15/32+4/32=166/32=83/16

4.15-3.75*10%-5/8=4.15-0.375-5/8=4.15-3/8+5/8=4.15-1=3.15

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