写出下面各小数
÷ × ÷ ×120÷ 120× ÷21 ×21.
先看清左右两题之间的关系,再写出得数.= = == = == =
算一算.×3= ×4= ×2== ÷3= ÷4=÷2= ÷2=
开火车.
直接写得数= = = == 9×= 0.8﹣= =