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Cornerstone · Grades 3–5 Keystones #1 22 August 2025
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 August 2025 · mathsvault.uk/keystones

  1. 1. Number

    Add: 6⁄8 + 1⁄4

    Answer: 1⁄1
  2. 2. Algebra

    Solve: 9x = 99

    Answer: x = 11
  3. 3. Geometry

    Calculate the distance between (9, 8) and (12, 12)

    Answer: 5
  4. 4. Ratio

    Calculate 25% of 200

    Answer: 50
  5. 5. Statistics

    Calculate the mean of: 44, 31, 45, 41, 6, 18

    Answer: 30.8

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