Gauss was a very smart schoolboy.
高斯小时候，是个聪明的小学生。
One day his teacher gave the class a hard sum.
有一天，老师出了道难题。
The boys had to add 1 to 100.
要把1到100全部加起来。
Gauss paired the first number with the last.
高斯把头尾两个数配成一对。
Each pair makes 101.
每一对，加起来都是101。
There are fifty pairs in all.
这样的对子，一共有五十个。
He got 5050 in just a few seconds.
没几秒钟，他就算出了5050。
