Primes, HCF and LCM
This chapter covers how to classify whole numbers as prime or composite using trial division, express a composite number as a product of its prime factors using index notation, find the square root of a perfect square and the cube root of a perfect cube using prime factorisation.
Secondary 111 sectionsO-Level Mathematics (4052)
Learning Outcomes
- Classify whole numbers as prime or composite using trial division
- Express a composite number as a product of its prime factors using index notation
- Find the square root of a perfect square and the cube root of a perfect cube using prime factorisation
- Find the smallest value of that makes a given expression a perfect square or perfect cube
- Find the highest common factor (HCF) of two or more numbers using prime factorisation
- Find the lowest common multiple (LCM) of two or more numbers using prime factorisation
- Apply HCF and LCM to solve real-life problems
Start reading
11 sections, beginning with Why Primes Matter.
Practise this chapter
Questions on Primes, HCF and LCM, marked as you go, with the working shown.