60又2/3乘以59又1/3 简便计算!
问题描述：
60又2/3乘以59又1/3 简便计算!
答
(60+2/3)*(59+1/3)
=(60+2/3)*(60-2/3)
=60^2-(2/3)^2
=3600-4/9
=3599+1-4/9
=3599+5/9
=3599又5/9