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Capstone · Grades 7–9 Keystones #126 6 May 2026 Skills week 5 of 7
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Keystones — Capstone

Five GCSE retrieval questions · 6 May 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — powers of powers

    Simplify: ((a4)3)2

    Answer: a24
  2. 2. Algebra Quadratic nth term

    Determine the nth term: 5, 11, 21, 35, ...

    Answer: 2n² + 3
  3. 3. Geometry Equation of a circle

    State the equation of a circle with centre (6, 3) and radius 8

    Answer: (x - 6)² + (y - 3)² = 64
  4. 4. Ratio Changing a ratio

    In ratio 5:3, if the second quantity is 30, what is the first?

    Answer: 50
  5. 5. Statistics Range

    Find the range of: 50, -21, 27, 47, -28

    Answer: 78

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