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Capstone · Grades 7–9 Keystones #1 28 October 2025
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Keystones — Capstone

Five GCSE retrieval questions · 28 October 2025 · mathsvault.uk/keystones

  1. 1. Number

    Simplify: y4 × y3 × y2

    Answer: y9
  2. 2. Algebra

    Solve: x⁄4 = 9

    Answer: x = 36
  3. 3. Geometry

    Adjacent = 18cm, hypotenuse = 30cm. Find the angle

    Answer: 53.1°
  4. 4. Ratio

    Simplify the ratio 3m:300cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 4 numbers is 23. If 3 of them are 15, 36, 25, what is the missing number?

    Answer: 16

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