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Capstone · Grades 7–9 Keystones #225 13 August 2026 Skills week 5 of 7
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Keystones — Capstone

Five GCSE retrieval questions · 13 August 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — powers of powers

    Simplify: ((a2)2)2

    Answer: a8
  2. 2. Algebra Quadratic nth term

    Determine the nth term: 7, 16, 31, 52, ...

    Answer: 3n² + 4
  3. 3. Geometry Equation of a circle

    State the equation of a circle with centre (2, 3) and radius 7

    Answer: (x - 2)² + (y - 3)² = 49
  4. 4. Ratio Changing a ratio

    In ratio 7:3, if the second quantity is 48, what is the first?

    Answer: 112
  5. 5. Statistics Range

    Find the range of: -24, 31, -13, -23, -3

    Answer: 55

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