9又3/1+99又3/1+999又3/1+9999又3/1+2又3/2 日期:2013-03-15 23:39:05 人气:1 9又3/1+99又3/1+999又3/1+9999又3/1+2又3/2 333X334+999X222 =333X334+333X666 =333×(334+666) =333×1000 =333000