Question

简算求解

1、【4/7×(3/5-0.25)+3/10】÷0.5 2、0.374×48＋0.62×37.4－3.74 3、0.125×3/4+1/8×8.25+12.5% 4、2012÷2012又2012/2013+1/2014

Answer 1

您好：

1、【4/7×(3/5-0.25)+3/10】÷0.5
=[4/7x(3/5-1/4)+3/10]x2
=(4/7x7/20+3/10)x2
=(2/10+3/10)x2
=1/2x2
=1

2、0.374×48＋0.62×37.4－3.74
=0.374x48+62x0.374-0.374x10
=(48+62-10)x0.374
=100x0.374
=374

3、0.125×3/4+1/8×8.25+12.5%
=0.125x0.75+0.125x8.25+0.125
=0.125x(0.75+8.25+1)
=0.125x10
=1.25

4、2012÷2012又2012/2013+1/2014
=2012÷（2012x1又1/2013）+1/2014
=2012÷2012÷2014/2013+1/2014
=2013/2014+1/2014
=1

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