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Cornerstone · Grades 3–5 Keystones #1 9 September 2025
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 September 2025 · mathsvault.uk/keystones

  1. 1. Number

    Add: 1⁄6 + 3⁄5

    Answer: 23⁄30
  2. 2. Algebra

    Simplify: 2x + 4x

    Answer: 6x
  3. 3. Geometry

    Find the area of a circle with radius 8cm

    Answer: 201.06cm²
  4. 4. Ratio

    Simplify the ratio 8:20

    Answer: 2:5
  5. 5. Statistics

    Calculate the range of: 37, 66, 85, 75, 24, 73

    Answer: 61

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