用简便方法计算!-3.14×35.2+6.28×(-23.3)-1.57×36.4=?
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/21 03:32:05
![用简便方法计算!-3.14×35.2+6.28×(-23.3)-1.57×36.4=?](/uploads/image/z/1688379-51-9.jpg?t=%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97%21-3.14%C3%9735.2%2B6.28%C3%97%EF%BC%88-23.3%EF%BC%89-1.57%C3%9736.4%3D%3F)
用简便方法计算!-3.14×35.2+6.28×(-23.3)-1.57×36.4=?
用简便方法计算!-3.14×35.2+6.28×(-23.3)-1.57×36.4=?
用简便方法计算!-3.14×35.2+6.28×(-23.3)-1.57×36.4=?
-3.14×35.2+6.28×(-23.3)-1.57×36.4
=-3.14×35.2+3.14×(-46.6)-3.14×18.2
=3.14×(-35.2-46.6-18.2)
=3.14×(-100)
=-314