Cách sử dụng
The word "number" is used to refer to a symbol, word, or figure that represents a quantity or value. For example, if you count the number of pencils on your desk, you might say "there are three pencils." In mathematics, numbers can also be used for calculations and solving problems. We also use numbers for identification purposes such as phone numbers, social security numbers, and zip codes. Overall, the word "number" is used when we want to describe a quantity or value in a clear and concise way.