We need numbers for counting and measuring. 在计算和测量中我们需要用到数字。

　　Numbers are zero, one, two, three, four, five, six, seven, eight, nine, ten and so on. 数字有0、1、2、3、4、5、6、7、8、9、10等等。

　　Students learn how to add and subtract with numbers at school. 学生在学校里学习如何进行数字的加和减。

　　There was a young boy in China. 中国有个男孩。

　　He was really good at math. 他非常擅长数学

　　He went to a university and study math when he was nine. 他在9岁的时候就上大学研究数学了。