What is an integer?
In GCSE maths, an integer is a whole number that is positive, negative or zero. Some examples of integers are 1, 5, 23, 898, 0, -2, -700, … etc. There are an infinite number of positive integers and negative integers.
Examples of numbers that are not integers include any number with a decimal part (such as 3.25, -6.8, 0.333… etc.) or any mixed numbers with fractional parts (such as 2 ⅓ or 6 ½). Irrational numbers, such as 𝜋 (pi) and √2 (the square root of 2), are not integers as they have never-ending decimal parts with no repeating patterns.
Integer revision resources to ace your exams
Integers are covered in our revision notes on types of number from GCSE Maths. You can also have a go at our related exam questions and flashcards to test your understanding. Don’t forget to check out the past papers for more general exam revision.
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