What you need to know
Check yourself against these “I can” statements.
- I can write a number as a product of its prime factors
- I can write prime factorisations using powers, like 24 = 2³ × 3
- I can use prime factors to find the HCF and LCM of two numbers
Practise this topic
3 resourcesPrime Decomposition
Products of prime factors (of a number, of a product such as 40 × 63, and of a number in prime factor form times or divided by a small number, like 2⁴ × 3⁵ × 5 ÷ 9), HCF and LCM from (and using) prime decomposition for two and…
🧩 ConnectionsNumber Properties
Primes, squares, cubes, triangular numbers, multiples and factors. Every number fits exactly one group, so numbers like 91 that look prime are traps.
⬢ BlockbustersPrime Decomposition Blockbusters
Blockbusters with the questions from the Prime Decomposition worksheet: choose its levels for the ordinary hexagons and for the harder ★ ones. Show the answer and the worked solution, or play against the computer with multiple…
These are the pages for Prime Factor Decomposition in the Year 7 scheme of work, following Pearson Edexcel Maths Progress Delta 1. Open this topic in Mr Wells Maths to see it alongside the rest of the course.