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Cornerstone · Grades 3–5 Keystones #1 8 January 2025
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 January 2025 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Simplify: 2x + 5x

    Answer: 7x
  3. 3. Geometry

    Calculate the area of a circle with diameter 19cm

    Answer: 283.53cm²
  4. 4. Ratio

    Simplify the ratio 20:8

    Answer: 5:2
  5. 5. Statistics

    Calculate the mean of: 38, 22, 25, 35, 16, 40, 27, 7

    Answer: 26.3

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