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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

小学五年级,简便小数运算有: 4.8+8.63+5.2+0.37 5.93+0.19+2.81 1.76+0.195+3.24 2.35+1.713+0.287+7.65 0.134+2.66+0.866 1.27+3.9+0.73+16.1 7.5+4.9-6.5 3.07-0.38-1.62 1.29+3.7+2.71+6.3 8-2.45-1.55 12.7-(3.7+0.84) 7.6×0....

=(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。

(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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