9又3/1+99又3/1+999又3/1+9999又3/1+2又3/2
问题描述:
9又3/1+99又3/1+999又3/1+9999又3/1+2又3/2
答
333X334+999X222
=333X334+333X666
=333×(334+666)
=333×1000
=333000