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Capstone · Grades 7–9 Keystones #1 4 August 2025
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Keystones — Capstone

Five GCSE retrieval questions · 4 August 2025 · mathsvault.uk/keystones

  1. 1. Number

    Simplify: y4 × y3 × y2

    Answer: y9
  2. 2. Algebra

    Solve: x⁄3 = 3

    Answer: x = 9
  3. 3. Geometry

    Adjacent = 28cm, hypotenuse = 40cm. Find the angle

    Answer: 45.6°
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 4 numbers is 36. If 3 of them are 15, 41, 17, what is the missing number?

    Answer: 71

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