In algebra, what is a variable?
A letter that tells you which operation to perform.
A number that has the same value in every calculation.
A letter that stands for an unknown or changing number.
A number written directly in front of a letter.
Flashcards for Edexcel GCSE Maths Writing an Expression, covering the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3. 20 cards, matched to the Edexcel GCSE Maths (1MA1) specification.