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    How exam boards mark GCSE and A-Level exams

    Mark schemes explained, board by board. Choose the board shown on the paper you are working on: boards can differ by subject.

    Use the scheme for your exact paper

    Check the subject, awarding organisation, qualification level, course code and paper on your question. The board guides below explain the approach; they are not a substitute for that paper’s official mark scheme.

    Find your exact course

    Example · AQA GCSE Mathematics · 8300

    See how feedback helps an answer

    A MasteryMind-authored practice question with prepared feedback. No account needed.

    A rectangle has length 3a cm and width 2b cm. Write an expression for its area in terms of a and b. Show your working.

    Example response: 3a × 2b = 5ab cm²

    View the two-mark practice rubric
    • One mark for multiplying the length by the width.
    • One mark for the correct area, 6ab cm².

    Board guides

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