来自金惠娟的问题
569+468+432+131小学四年级简便?
569+468+432+131小学四年级简便?
3回答
2020-06-12 01:49
569+468+432+131小学四年级简便?
569+468+432+131小学四年级简便?
16001600
131+569+468+432
=700+900
(569+131)+(468+432)=1700