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Capstone · Grades 7–9 Keystones #1 21 September 2025
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Keystones — Capstone

Five GCSE retrieval questions · 21 September 2025 · mathsvault.uk/keystones

  1. 1. Number

    The sum of three consecutive numbers is 120. What are the numbers?

    Answer: 39, 40, and 41
  2. 2. Algebra

    Solve: x⁄7 = 1.4285714285714

    Answer: x = 10
  3. 3. Geometry

    Adjacent = 20cm, hypotenuse = 30cm. Find the angle

    Answer: 48.2°
  4. 4. Ratio

    Simplify the ratio 3m:300cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 6 red, 5 blue and 2 green sections. Probability of landing on red?

    Answer: 6⁄13

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