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Cornerstone · Grades 3–5 Keystones #1 15 February 2025
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Keystones — Cornerstone

Five GCSE retrieval questions · 15 February 2025 · mathsvault.uk/keystones

  1. 1. Number

    Add: 3⁄6 + 1⁄5

    Answer: 7⁄10
  2. 2. Algebra

    Expand: 5(x + 8)

    Answer: 5x + 40
  3. 3. Geometry

    Find the distance between (1, 2) and (5, 10)

    Answer: 8.94
  4. 4. Ratio

    Simplify the ratio 6:15

    Answer: 2:5
  5. 5. Statistics

    Find the mean of: 12, 6, 12, 4, 8

    Answer: 8.4

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