Number — AQA GCSE MathsTopics in Number for AQA GCSE Maths. Choose a topic for explanations and practice.Integers, Powers & RootsFactors, Multiples & PrimesFractions, Decimals & PercentagesPercentages: Increase & DecreasePercentage Change & Reverse PercentagesRatio of AmountsIndices & Standard FormSurdsRounding & EstimationBounds & Error IntervalsRecurring DecimalsStart practice Back to AQA GCSE Maths