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0.056 0.4 0.5简便计算

0.056*0.4*0.5 =0.056*(0.4*0.5) =0.056*0.2 =0.0112

=0.4*0.5*0.056=0.2*0.056=0.118

0.0560.40.5用简便计算0.0560.40.5=(0.40.5)0.056=0.20.056=0.0112 再看看别人怎么说的.

0,056x0,4x0,5简便计算先算后面的,0.4*0.5=0.2.原始式子=0.056*0.2=0.0112

=0.056*0.2=0.0112

0.028*0.5*0.4=0.028*(0.5*0.4)=0.028*0.2=0.0056

0.4乘0.5乘0.065

0.3X2.5X0.4的简便计算:0.3X2.5X0.4=0.3*(2.5*0.4)=0.3*1=0.3 扩展资料1、乘法简便计算规律:乘法交换律:a*b=b*a;乘法结合律:a*b*c=(a*b)*c=a*(b*c);乘法分配律:(1653a+b)*c=a*c+b*c;(a-b)*c=a*c-b*c.2、减法简便计算规律:减法的基本性质.3、除法简便计算规律:除法的基本性质;商不变的性质.4、加法简便计算规律:加法交换律; 加法结合律.

4.2*0.5=4.2*1/2=4.2÷2=2.1

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