321x23一46x27一67x23用简便计算321x23一46x27一67x23=23*321-23*2*27-23*67=23*(321-54-67)=23*200=4600
321x23一46x27一67x23=321x23一23x2x27一67x23=（321-54-67）x23=200x23=4600.
