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(3/5×3.625+4.375×0.6)×1.25简便运算

原式 =0.6×(3.625+4.375)×1.25 =0.6×8×1.25 =0.6×10 =6

①1÷2.5+2.5×0.4+1=0.4+1+1,=2.4;②89×[34-(716-0.125)]=89×[34-(716-18)],=89×[34-(716-216)],=89×[1216-516],=89×716,=718;③(35×3.625+4.375×0.6)×1.25=(0.6×3.625+4.375×0.6)×1.25=(3.625+4.375)×0.6×1.25,=8×1.25×0.6,=1...

=(4.375/6.25+4.375✘79)/4.75 =(0.7+345.625)/4.75 =72.9

原式=3/4x3/8+0.75+62.5%x75%=0.75x0.375+0.75+0.625x0.75=0.75x(0.375+0.625)+0.75=0.75x1+0.75=0.75+0.75=1.5或者=3/4x3/8+0.75+62.5%x75%=0.75x0.375+0.75+0.625x0.75=0.75x(0.375+1+0.625)=0.75x2=1.5供参考。

0.125*0.25*32 =(0.125*8)*(0.25*4) =1 25.07-4.98 =25.07-(5-0.02) =25.07-5+0.02 =20.07+0.02 =20.09 4.375+2.9+9.625+7.1 =(4.375+9.625)+(2.9+7.1) =14+10 =24 (0.8*0.08)*12.5 =0.8*(0.08*12.5) =0.8*1 =0.8 (12.5+12.5)*2...

0.75+5.625×4分之3+75%×1.375 =0.75×(1+5.625+1.375) =0.75×8 =6

原式=2.375+5.625+3/4+5/4=8+8/4=8+2=10

(1)3.625+2 1 13 +4 12 13 +0.375,=(3.625+0.375)+(2 1 13 +4 12 13 ),=4+7,=11;(2) 1 4 ×7 5 7 +0.25×3 2 7 ,=0.25×7 5 7 +0.25×3 2 7 ,=0.25×(7 5 7 +3 2 7 ),=0.25×(10+1),=2.5+0.25,=2.75.

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