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Cornerstone · Grades 3–5 Keystones #52 6 August 2026
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 August 2026 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 5⁄10 + 4⁄10

    Answer: 9⁄10
  2. 2. Algebra

    What is the next term? 8, 24, 72, 216, ...

    Answer: 648
  3. 3. Geometry

    Calculate the area of a circle with diameter 21cm

    Answer: 346.36cm²
  4. 4. Ratio

    Simplify the ratio 24:8

    Answer: 3:1
  5. 5. Statistics

    Find the range of: 25, 17, 13, 10, 37

    Answer: 27

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