Key learning points

1. Common multiples can be found using the prime factorisation of numbers
2. The lowest common multiple of two numbers can be found by comparing the prime factorisation of both numbers
3. Sometimes a Venn diagram can help identify the lowest common multiple of two numbers
4. The lowest common multiple of more than two numbers can be found using prime factorisation

Keywords

• Lowest common multiple - The lowest common multiple is the lowest number that is a multiple of two or more integers.

• LCM - LCM is an abbreviation for lowest common multiple.

Common misconception