问题描述:
-3.14×35.2+6.28×(-23.3)+1.57×36.4
最佳答案:
方法一:
-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)
=3.14x(-63.6)
=-199.704
方法二:
-3.14×35.2+6.28×(-23.3)+1.57×36.4
=-1.57x2x35.2+1.57x4×(-23.3)+1.57×36.4
=1.57x(-70.4)+1.57×(-93.2)+1.57×36.4
=1.57x(-70.4-93.2+36.4)
=1.57x(-127.2)
=-199.704