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Capstone · Grades 7–9 Keystones #1 1 October 2025
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Keystones — Capstone

Five GCSE retrieval questions · 1 October 2025 · mathsvault.uk/keystones

  1. 1. Number

    The sum of three consecutive numbers is 90. What are the numbers?

    Answer: 29, 30, and 31
  2. 2. Algebra

    Solve: x⁄5 = 7.8

    Answer: x = 39
  3. 3. Geometry

    Find the distance between (-1, -2) and (5, 11)

    Answer: 14.32
  4. 4. Ratio

    Simplify the ratio 5m:500cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 4 red, 2 blue and 4 green sections. Probability of landing on red?

    Answer: 2⁄5

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