Whole Numbers are simply the numbers 0, 1, 2, 3, 4, 5, ... (and so on) No Fractions! (But numbers like ½, 1.1 and −5 are not whole numbers .) Counting Numbers are Whole Numbers , but without the zero. Because you can't "count" zero. So they are 1, 2, 3, 4, 5, ... (and so on). Whole numbers include all natural numbers and 0 . They are real numbers that do not include fractions, decimals, and negative integers. Learn everything about whole numbers with definition in this article. We can say, all the whole numbers are real numbers, but not all the real numbers are whole numbers . Thus, we can define whole numbers as the set of natural numbers and 0. Integers are the set of whole numbers and negative of natural numbers. Hence, integers include both positive and negative numbers including 0. Numbers are the mathematical figures or values applicable for counting, measuring, and other arithmetic calculations. Some examples of numbers are integers, whole numbers , natural numbers, rational and irrational numbers, etc. In this article, we will answer the question "What are whole numbers ?"