问题描述: -3.14×35.2+6.28×(-23.3)+1.57×36.4 初一 1个回答 分类:数学 2019-10-11 问题解答: 我来补答 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 展开全文阅读