A natural number is the set of numbers that we use to count things, starting at 1 and increasing without any end. The natural numbers are 1, 2, 3, 4, 5, ... and are used in everyday life to count objects or describe quantities. Natural numbers are whole positive numbers (positive integers); they do not include zero, fractions, or negative numbers. In GCSE Mathematics, understanding natural numbers is important, as they are the basic building blocks for mathematical concepts like multiplication, division, addition and subtraction.
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