3.5%乘9.9 和 4.62+9.9怎么简便计算?
谢谢你看我的回答,有不对之处敬请指正!!!9.9×3.5%=(10-0.1)×0.035=10×0.035-0.1×0.035=0.35-0.0035=0.34654.62+9.9=4.62+(10-0.1)=4.62+10-0.1=14.62-0.1=14.52
(10-0.1)*3.5%4.62-0.1+10
(3.5%+4.62)*9.9=49.093
答:4.52*47+45.2*5.3 =45.2*4.7+45.2*5.3 =45.2*10 =452详情>>
答:详情>>