12.5*1.7*0.8的简便运算
问题描述：
12.5*1.7*0.8的简便运算
答
12.5*1.7*0.8
=(100/8)*0.8*1.7
=10*1.7
=17
答
12.5*1.7*0.8
=12.5*0.8*1.7
=10*1.7
=17