-3.14乘35.2加6.28乘(-23.3)-15.7乘36.4
问题描述:
-3.14乘35.2加6.28乘(-23.3)-15.7乘36.4
答
-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