-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:2024/04/29 13:00:42
-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+6.28×(-23.3)-1.57×36.4

-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

-3.14×35.2+6.28×(-23.3)-1.57×36.4
=-3.14×35.2+3.14*2×(-23.3)-3.14*1/2×36.4
=-3.14×35.2+3.14×(-46.6)-3.14×18.2
=3.14(-35.2-46.6-18.2)
=3.14*(-100)
=-314

简便算法
-3.14×35.2+6.28×(-23.3)-1.57×36.4
=-3.14×35.2+(3.14×2)×(-23.3)-(3.14÷2)×36.4
=3.14×(-35.2)﹢3.14×(-23.3×2)-3.14×(36.4÷2)
=3.14×(-35.2-46.6-18.2)
=3.14×100
=314

-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)
=123