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Cornerstone · Grades 3–5 Keystones #34 19 July 2026
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 July 2026 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Simplify: 6x + 8x

    Answer: 14x
  3. 3. Geometry

    Calculate the area of a circle with diameter 15cm

    Answer: 176.71cm²
  4. 4. Ratio

    Simplify: 12:15:12

    Answer: 4:5:4
  5. 5. Statistics

    Find the mean of: 9, 11, 10, 7, 7

    Answer: 8.8

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