×3=
×0.8=
1÷=
3-= ÷10= ×= 9×=
+= ×= 1÷10%= 0.75×125%=
×100= ÷ = 0.75× = ÷ = ×0÷ =
6÷ = ÷2= 75× = × = 时:80分钟=
3×50%= 7.2--40%=
①
②
③
④
解答思路:如果设新进的A款运动鞋有2x双,那么新进的B款运动鞋有双,根据题意可以列方程求出x的值。