6乘0.45+2乘0.045+0.12乘4.5 简便运算
问题描述:
6乘0.45+2乘0.045+0.12乘4.5 简便运算
答
6乘0.45+2乘0.045+0.12乘4.5
=6*0.45+0.2*0.45+1.2*0.45
=0.45*(6+0.2+1.2)
=0.45*7.4
=3.33