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Capstone · Grades 7–9 Keystones #8 8 January 2026
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Keystones — Capstone

Five GCSE retrieval questions · 8 January 2026 · mathsvault.uk/keystones

  1. 1. Number

    The sum of three consecutive numbers is 99. What are the numbers?

    Answer: 32, 33, and 34
  2. 2. Algebra

    Solve: x⁄5 = 1.2

    Answer: x = 6
  3. 3. Geometry

    Find c if a = 15cm and b = 18cm in a right triangle

    Answer: 23.4cm
  4. 4. Ratio

    Simplify the ratio 5m:500cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 3 red, 2 blue and 3 green sections. Probability of landing on red?

    Answer: 3⁄8

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