7.2*0.09+0.1*0.72简便列综合算式

问题描述:

7.2*0.09+0.1*0.72简便列综合算式

7.2*0.09+0.1*0.72
=7.2*0.09+0.01*7.2
=7.2*(0.09+0.01)
=7.2*0.1
=0.72