Least Common Multiple (LCM) for GCSE Maths: Explanation, Examples and Questions

The Least Common Multiple (LCM) is the smallest number that is a multiple of two or more numbers, making it an essential tool for solving problems involving fractions, ratios, and recurring patterns.

At GCSE level, students learn methods to find the LCM, including using prime factorisation and listing multiples. These techniques are crucial for working with mathematical problems in both pure and applied contexts.

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