Whole numbers are a set of numbers that include all the non-negative integers. This means they start from 0 and go up to infinity, including 1, 2, 3, and so on. Whole numbers do not include fractions or decimals, making them simple and easy to understand. They are often used in counting and ordering. In mathematics, whole numbers are important because they form the basis for more complex number systems. They are used in everyday situations, such as counting objects, measuring quantities, and performing basic arithmetic operations like addition and subtraction. Whole numbers help us organize and quantify the world around us.