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Cornerstone · Grades 3–5 Keystones #1 3 April 2025
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 April 2025 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 1⁄6 + 4⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Expand: 7(x + 9)

    Answer: 7x + 63
  3. 3. Geometry

    Calculate the area of a circle with diameter 17cm

    Answer: 226.98cm²
  4. 4. Ratio

    Simplify: 12:8:10

    Answer: 6:4:5
  5. 5. Statistics

    Calculate the mean of: 50, 12, 24, 23, 47, 49, 20, 46

    Answer: 33.9

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