14/10/2015 16:52 BST | Updated 14/10/2015 16:59 BST

QUIZ! GCSE Maths Questions Are Harder Than You Remember

We're celebrating World Maths Day with a quiz to re-live those wonderful secondary school memories of GCSE mathematics.

From this year changes to the exam mean new skills are tested - but don't worry, old classics still linger.

Test your knowledge of GCSE maths in our quick quiz...