Prime Factorisation for GCSE Maths: Methods, Examples and Questions

Prime factorisation is a key concept in mathematics, breaking down numbers into their prime factors to simplify calculations and solve problems.

At GCSE level, students learn how to find the prime factors of a number using methods including the tree diagram method. This skill is essential for working with highest common factors (HCF), lowest common multiples (LCM), and simplifying fractions.

The rest of the lesson on prime factorisation is not quite ready, but if you already know what you're doing, we have practice questions linked below.