GCSE · Integers, powers & roots

Prime factorisationExam-style questions

Why every whole number breaks into a unique product of primes, how to find it with a factor tree, and how the prime form answers divisibility and square-number questions instantly.

Start practising Read the lesson

16 questions · GCSE (Higher) level · mark scheme and worked solution on each · no sign-up to try

DifficultyAll Level 1 Level 2 Level 3 Level 4 Level 5

1
Write $90$ as a product of its prime factors. Give your answer in index form. [2]
Level 1 · 2 marksTry it
2
Write $24$ as a product of its prime factors.
Level 1 · 2 marksTry it
3
$x = 2 \times 3 \times 5$ . Write down the value of $x$ .
Level 1 · 1 markTry it