We compare numbers to know which ones are greater than, or smaller than, or equal to another number.
Comparing numbers is an important part of building a student's number sense. Number sense is the ability for a student to recognize a number, its value and it's relationship with other numbers.
Comparing number is the ability to determine more and fewer, greater than, less than and equal to, and putting a group of numbers in order. We are comparing numbers all the time in our daily lives.