(69.9-4.74-5.16)*6.5怎么简便计算
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:2024/08/05 01:47:47
(69.9-4.74-5.16)*6.5怎么简便计算
![(69.9-4.74-5.16)*6.5怎么简便计算](/uploads/image/z/4090974-6-4.jpg?t=%2869.9-4.74-5.16%29%2A6.5%E6%80%8E%E4%B9%88%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
(69.9-4.74-5.16)*6.5
=(69.9-(4.74+5.16))*6.5
=(69.9-9.9)*6.5
=60*6.5
=60*6+60*0.5
=360+30
=390
=(69.9-(4.74+5.16))*6.5
=(69.9-9.9)*6.5
=60*6.5
=60*6+60*0.5
=360+30
=390