22.05*8.2-20.05*4.5-20.5*2.7如何简便运算
问题描述:
22.05*8.2-20.05*4.5-20.5*2.7如何简便运算
答
22.05*8.2-20.05*4.5-20.5*2.7
=22.05×(8.2-4.5-2.7)
=22.05×1
=22.05