6.28×负23.3-3.14×35.2-1.57×36.4用简便计算

问题描述:

6.28×负23.3-3.14×35.2-1.57×36.4用简便计算

6.28×负23.3-3.14×35.2-1.57×36.4
=3.14×负46.6-3.14×35.2-3.14×18.2
=3.14×(-46.6-35.2-18.2)
=3.14×(-100)
=-314
回答完毕