六年级简便计算题简便计算(70+1/68)*1/69
六年级简便计算题简便计算(70+1/68)*1/69
日期:2022-02-24 15:30:17 人气:1
(70+1/68)*1/69
=(69+1+1/68)*1/69
=(69+69/68)*1/69
=69*1/69+69/68*1/69
=1+1/68
=69/68
=(69+1+1/68)*1/69
=(69+69/68)*1/69
=69*1/69+69/68*1/69
=1+1/68
=69/68