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7.6×3/14加17.5×6/25用简便方法计算

7.6×3/14+17.5×6/25 =11.4/7+21/5 =(11.5*5+21*7)/35 =(57.5+147)/35 =204.5/35 =409/70

37.6减(7.6加3.25)怎样用简便方法计算? 37.6减(7.6加3.25) =37.6-7.6-3.25 =30-3.25 =26.75

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7.6×1又4分之3+17.5×25分之6 =7.6×1.75+1.75×(10×25分之6) =(7.6+2.4)×1.75 =10×1.75 =17.5。

75%×5/6+25%÷6/5 =75%×5/6+25%x5/6 =5/6x(75%+25%) =5/6x100% =5/6 求采纳

计算: 3.25x6.7+3.25x3.3 =3.25x(6.7+3.3) =3.25x10 =32.5

简便计算 25×38×6 =5×5×38×6 =5x38x5x6 =190x30 =5700

分析:逆用乘法分配律,就可以进行简便运算了。 37×15+37×10×6+37×25 =37×15+37×60+37×25 =37×(15+60+25) =37×100 =3700

6/5-3/5÷6/7 =6/5-3/5×7/6 =6/5-7/10 =12/10-7/10 =5/10 =1/2 3/25×51-3/25 =3/25×(51-1) =3/25×50 =6

7.6×25%加上3.5×1/4减去0.25的简便算法怎么写 7.6×25%加上3.5×1/4减去0.25 =0.25*(7.6+3.5-1) =0.25*10.1 =2.525

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