0.04乘1.38乘25除0.46简便运算

问题描述:

0.04乘1.38乘25除0.46简便运算

0.04*25*1.38 除以 0.46
=1*3*0.46除以 0.46
=3
好了

0.04乘1.38乘25除(除以吧~)0.46
=0.04乘25乘1.38除以0.46
=1乘1.38除以0.46
=1.38除以0.46
=3

=0.04*25*(1.38/0.46)=1*3=3

前后交换 (0.04*25)*(1.38/0.46)=1*3=3