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0.3x2.5x0.4简便计算

=0.3*(2.5*0.4)=0.3*1=0.3

展开全部0.3*2.5*0.4=0.3*(2.5*0.4)=0.3*1=0.3

56*1.25=7*8*1.25=7*(8*1.25)=7*10=700.3*2.5*0.4=0.3*(2.5*0.4)=0.3*1=0.31.5*105=1.5*(100+5)=1.5*100+1.5*5=150+7.5=157.5

=0.3x(2.5x0.4) =0.3x1 =0.3

原式=0.3X(2.5X0.4) =0.3X1 =0.3

0.3x2.5x0.4用脱式计算=2.5x0.4x0.3=1x0.3=0.3

0.3x2.5x0.4 =2.5x0.4x0.3 =(2.5x0.4)x0.3 =1x0.3 =0.3

化作分数更简便运

原式=0.3*(2.5*0.4) =0.3*1 =0.3

解:0.3X2.5x0.5=2.5*(0.3*0.5)=2.5*0.15=0.375.

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