简便计算28.9*61.5+111*6.15
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/30 04:13:29
![简便计算28.9*61.5+111*6.15](/uploads/image/z/438116-68-6.jpg?t=%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%9728.9%2A61.5%2B111%2A6.15)
x){ɾ/-|nMR>!%v6DC²ī
W 5 Hb&
简便计算28.9*61.5+111*6.15
简便计算28.9*61.5+111*6.15
简便计算28.9*61.5+111*6.15
28.9*61.5+111*6.15
=289x6.15x111x6.15
=(289+111)x6.15
=400x6.15
=400x6+400x0.15
=2400+60
=2460