学校有3排房子,每排有4个教室,每个教室装6盏灯,一共安装了多少盏灯?3{3\7\4i.z;v'e(}:t-W7Q,D4r:_
算式:提示8Z*A1b:P1k/k'u;B8N:E;_3{3\7\4i.z;v'e(}:t-W7Q,D4r:_
答:一共安装了*d2O:C0r8j/y:x.E盏灯。3{3\7\4i.z;v'e(}:t-W7Q,D4r:_