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27.3x0.9+2.73人简便运算怎么算

简便计算 2400÷80×142 =30×142 =4260

15.6×8.3-83×0.56简便算法 =15.6x8.3-8.3x5.6 =(15.6-5.6)x8.3 =10x8.3 =83

145×30+30×55 =(145+55)×30 =200×30 =6000

red

71×8+71乘二 =71×(8+2) =71×10 =710

82×121-82×21用简便运算 =82x(121-21) =82x100 =8200

用简便方法怎么做 3.7-3×0.37-37×0.06 =3.7-0.3×3.7-3.7×0.6 =3.7×1-0.3×3.7-3.7×0.6 =3.7×(1-0.3-0.6) =3.7×0.1 =0.37

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