用简便方法计算:37.5×7.1+500×0.29+1.1×12.5
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/22 03:17:15
![用简便方法计算:37.5×7.1+500×0.29+1.1×12.5](/uploads/image/z/33493-13-3.jpg?t=%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97%EF%BC%9A37.5%C3%977.1%EF%BC%8B500%C3%970.29%EF%BC%8B1.1%C3%9712.5)
用简便方法计算:37.5×7.1+500×0.29+1.1×12.5
用简便方法计算:37.5×7.1+500×0.29+1.1×12.5
用简便方法计算:37.5×7.1+500×0.29+1.1×12.5
37.5×7.1+500×0.29+1.1×12.5
=(50-12.5)*7.1+50*2.9+1.1*12.5
=50*(7.1+2.9)-12.5*(7.1-1.1)
=500-12.5*6
=500-75
=425