简便计算:789*678+111分之789+678*788
问题描述:
简便计算:789*678+111分之789+678*788
答
789*678+111分之789+678*788
= 789*678+678*788+111分之789
= (789 +788) x 678 + 789/111
= 1577 x 678 + 7 + 12/111
= 1069213 又 12/111