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Lintel · Grades 5–7 Keystones #46 31 July 2026
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Five GCSE retrieval questions · 31 July 2026 · mathsvault.uk/keystones

  1. 1. Number

    Simplify: x8 × x4

    Answer: x12
  2. 2. Algebra

    Solve: x⁄4 = 9.75

    Answer: x = 39
  3. 3. Geometry

    Find c if a = 10cm and b = 21cm in a right triangle

    Answer: 23.3cm
  4. 4. Ratio

    Simplify the ratio 3m:300cm

    Answer: 1:100
  5. 5. Statistics

    A bag has 8 red and 6 blue balls. What is the probability of picking a red ball?

    Answer: 4⁄7

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