Year 10 factors, multiples, primes and HCF/LCM quiz to download as PDF

This Year 10 factors, multiples, primes and HCF/LCM quiz has 10 short questions for pupils aged 14-15. Type your answer, check it straight away and read the explanation when you get one wrong.

Year 10 factors, multiples, primes and HCF/LCM quiz: the 10 questions

What is the smallest prime number?
Write 30 as a product of primes.
What is the HCF of 8 and 20?
What is the LCM of 6 and 8?
How many factors does 20 have?
Is 1 a prime number? (yes or no)
What is \(2^2\times3^2\)?
List the prime numbers less than 12.
What is the LCM of 5 and 7?
(Higher) A code has 3 letters from A, B, C with repeats allowed. How many codes?

How to use this Year 10 factors, multiples, primes and HCF/LCM quiz

First, answer every question without a calculator unless the question says so. Then check your answer and read the short explanation. If you get fewer than 7 right, revise the factors, multiples, primes and HCF/LCM lesson and try again later. After that, try the multiple choice questions or the factors, multiples, primes and HCF/LCM worksheet.

Finally, take this quiz again before a test, because quick retrieval helps you remember. Moreover, all the pages of this chapter work together, so you can move between them at any time. For example, many pupils read the lesson on Monday, practise on Wednesday and test themselves on Friday.