13.72×0.25＋6.28÷4
问题描述：
13.72×0.25＋6.28÷4
答
13.72×0.25＋6.28÷4
=13.72×0.25＋6.28×0.25
=(13.72+6.28)×0.25
=20×0.25
=5
一个数乘0.25等于这个数除以4