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Cornerstone · Grades 3–5 Keystones #1 21 July 2025
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 July 2025 · mathsvault.uk/keystones

  1. 1. Number

    Add: 3⁄6 + 1⁄3

    Answer: 5⁄6
  2. 2. Algebra

    Expand: 4(4x + 8)

    Answer: 16x + 32
  3. 3. Geometry

    Find the area of a circle with radius 8cm

    Answer: 201.06cm²
  4. 4. Ratio

    Simplify the ratio 20:35

    Answer: 4:7
  5. 5. Statistics

    Calculate the range of: 42, 111, 32, 32, 58, 108

    Answer: 79

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