采纳谢谢
135×25+25×65＝（135+65）×25＝200×25＝500
135x25+25x65=(135+65)x25=200x25=5000
135*25+25*65=25*(135+65)=25*200=5000
135×25+25×65=(135+65)×25=200×25=5000
