Key term for OCR GCSE Mathematics, used in Inverse Operations.
A multiplication strategy where one factor is doubled and the other is halved to keep the final product identical but easier to calculate.
Doubling and halving appears in OCR GCSE Mathematics revision content for Number Operations and Integers, especially Inverse Operations and Checking Calculations.
Create a free account to access OCR GCSE Mathematics revision notes, track progress, and practise related key terms.
