简便方法计算72+5*720+49*72
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/25 08:43:03
简便方法计算72+5*720+49*72
![简便方法计算72+5*720+49*72](/uploads/image/z/18535951-55-1.jpg?t=%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%9772%2B5%2A720%2B49%2A72)
72+5×720+49×72
=1×72+5×720+49×72
=(1+49)×72+5×720
=50×72+5×720
=3600+3600
=7200
=1×72+5×720+49×72
=(1+49)×72+5×720
=50×72+5×720
=3600+3600
=7200