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Cornerstone · Grades 3–5 Keystones #49 3 August 2026
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 August 2026 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 1⁄6 + 2⁄6

    Answer: 1⁄2
  2. 2. Algebra

    Solve: x + 12 = 27

    Answer: x = 15
  3. 3. Geometry

    Opposite = 10cm, adjacent = 10cm. Calculate the angle

    Answer: 45°
  4. 4. Ratio

    Simplify: 12:9:6

    Answer: 4:3:2
  5. 5. Statistics

    Find the mean of: 7, 19, 12, 19, 12

    Answer: 13.8

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