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Cornerstone · Grades 3–5 Keystones #1 18 June 2025
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Keystones — Cornerstone

Five GCSE retrieval questions · 18 June 2025 · mathsvault.uk/keystones

  1. 1. Number

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Simplify: 9x + 2x

    Answer: 11x
  3. 3. Geometry

    Opposite = 8cm, adjacent = 19cm. Calculate the angle

    Answer: 22.8°
  4. 4. Ratio

    Simplify: 6:12:9

    Answer: 2:4:3
  5. 5. Statistics

    Find the range of: 40, 35, 20, 20, 15

    Answer: 25

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