怎样简便就怎样算57.5-4.25-15.75 4.82-5.2÷0.8×0.6 ×16.31-2.31÷6760÷13+17×251.25×32×2.535÷×(

发布时间:2020-07-30 16:53:50

怎样简便就怎样算 57.5-4.25-15.75 4.82-5.2÷0.8×0.6 ×16.31-2.31÷6760÷13+17×251.25×32×2.535÷×(1-)

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解:57.5-4.25-15.75
=57.5-(4.25+15.75),
=57.5-20,
=37.5;

(2)4.82-5.2÷0.8×0.6
=4.82-6.5×0.6,
=4.82-3.9,
=0.92;

(3)×16.31-2.31÷
=×16.31-2.31×,
=×(16.31-2.31),
=×14,
=10;

(4)6760÷13+17×25
=520+425,
=945;

(5)1.25×32×2.5
=(1.25×8)×(4×2.5),
=10×10,
=100;

(6)35÷×(1-)
=40×,
=28.

解析分析:(1)把原式改写为57.5-(4.25+15.75)然后再按照小数四则混合运算的运算方法进行计算即可;(2)(4)直接按照小数、整数四则混合运算的运算方法进行计算即可得到
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