49又50/49乘50怎么简便运算
问题描述：
49又50/49乘50怎么简便运算
答
49又50/49乘50
=(50-1/50)*50
=50*50-1/50*50
=2500-1
=2499
答
49又50/49乘50
=（50-50/1）×50
=50×50-50/1×50
=2500-1
=2499