40乘7.5的积被4个0.75的和除,商是多少?列式是
问题描述：
40乘7.5的积被4个0.75的和除,商是多少?列式是
答
(40*7.5)/(0.75+0.75+0.75+0.75)
=(40*7.5)/(4*0.75)
=(40/4)*(7.5*0.75)
=10*10
=100
答
（40*7.5）/(0.75*4)---4个0.75的和也就是0.75*4
=100