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2×37.5% 25×3/8%7×0.375

2×37.5% 25×3/8-7×0.375 =2×0.375+25×0.375-7×0.375 =(2+25-7)×0.375 =20×0.375 =7.5。

37.5%+3/8*1001-0.375*2 =3/8+3/8(1000+1)-3/8*2 =3/8+3/8*1000+3/8-3/8*2 =3/8*1000 =375

37.5%=3/8=0.375 所以等于:(2.4+6.6+1)x0.375=3.75

6×0.375+3/8×3+37.5% =6×0.375+0.375×3+0.375 =0.375×(6+3+1) =0.375×10 =3.75

如图

(1)4分之3×30%+5.25×0.3 =0.75×0.3+5.25×0.3 =(0.75+5.25)×0.3 =6×0.3 =1.8 (2)9分之7×37.5%+8分之3×9分之2 =9...

83×37、5%十18x3/8一0、375 =83x3/8+18x3/8-3/8 =(83+18-1)x3/8 =100x3/8 =37.5

73 × 0.375 + 28乘37.5%减8分之三 =73×0.375+28×0.375-0.375 =(73+28-1)×0.375 =100×0.375 =37.5

0.375×12+87×3/8+37.5% =0.375×12+87×0.375×0.375 =0.375×(12+87+1) =0.375×100 =37.5

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