数学在我们的日常生活中已被广泛应用，甚至于被一些投机取巧者以此来骗钱．只要我们稍具数学头脑，就不会上这种骗人把戏的当，不信，请看：一次，我路过一所小学，见大门口围着很多小朋友，我怀着好奇的心情去看了个究竟．见一张桌子上放了一只木制的大圆盘，圆盘上分成许多 Mathematics has been widely used in our daily life, and even some opportunistic people use it to make money. As long as we have a little mathematics mind, we will not go on this deceitful trick. If we do not believe it, please read: Once, I passed a primary school and I saw a lot of children around the gate. I looked at it with curiosity. exactly. See a large wooden disc placed on a table, divided into many