72*15+72*6-72怎么简便计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 08:05:44
![72*15+72*6-72怎么简便计算](/uploads/image/z/3013252-52-2.jpg?t=72%2A15%2B72%2A6-72%E6%80%8E%E4%B9%88%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
72*15+72*6-72怎么简便计算
72*15+72*6-72怎么简便计算
72*15+72*6-72怎么简便计算
72*15+72*6-72
=72(15+6-1)
=72x20
=1440
72*15+72*6-72
=72*(15+6-1)
=72*20
=1440
72*15+72*6-72
=72*(15+6-1)
=72*20
=1440
原式=72*(15+6-1)
=72*20
=1440