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3.6.×2.4÷0.5×20%的简便算法

3.6.*2.4÷0.5*20%=3.6*2.4*0.2*2=3.456

3.6*2.4*20%=(3^2-0.6^2)*0.2=(9-0.36)*0.2=1.8-0.072=1.728

(2.4 +3.6)*0.5*872的简便算法=6x0.5x872=3x872=3x900-3x28=2700-84=2700-100+16=2616

3.6*2.5*0.5 =3.6*1/2*2.5 =1.8*2.5 =(2-0.2) *2.5 =5-0.5 =4.5

2.4*0.5+3.6*0.5,=(2.4+3.6)*0.5,=6*0.5,=3.故答案为:乘法分配律.

3.6乘2.4除以1.92的简便计算3.6*2.4÷1.92=3.6*(2.4/1.92)=3.6*(5/4)=4.5.

3.6乘2.4=3.6乘0.4乘6=1.44乘6=8.640

3.6÷0.6*0.5=6*0.5=3

3.8x2.4÷3.8x0.5=3.8÷3.8x2.4x0.5=2.4x0.5=1.2

2.4 +3.6÷2.4+3.6=(2.4+3.6)+1.5=6+1.5=7.5

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