简便计算!28×29/27+
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/16 05:38:59
简便计算!28×29/27+
简便计算!28×29/27+
简便计算!28×29/27+
28×29/27
=(27+1)×29/27
=27×29/27+1×29/27
=29+29/27
=30又2/27
28×29/27+?
简便计算!28×29/27+
简便计算!28×29/27+
简便计算!28×29/27+
28×29/27
=(27+1)×29/27
=27×29/27+1×29/27
=29+29/27
=30又2/27
28×29/27+?