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Capstone · Grades 7–9 Keystones #164 13 June 2026
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Keystones — Capstone

Five GCSE retrieval questions · 13 June 2026 · mathsvault.uk/keystones

  1. 1. Number

    The sum of three consecutive numbers is 108. What are the numbers?

    Answer: 35, 36, and 37
  2. 2. Algebra

    Solve: x⁄6 = 5.1666666666667

    Answer: x = 31
  3. 3. Geometry

    Find c if a = 8cm and b = 18cm in a right triangle

    Answer: 19.7cm
  4. 4. Ratio

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 6 red, 5 blue and 3 green sections. Probability of landing on red?

    Answer: 3⁄7

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