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Capstone · Grades 7–9 Keystones #125 5 May 2026 Skills week 5 of 7
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Keystones — Capstone

Five GCSE retrieval questions · 5 May 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — powers of powers

    Simplify: ((a3)3)2

    Answer: a18
  2. 2. Algebra Quadratic nth term

    Determine the nth term: 10, 22, 42, 70, ...

    Answer: 4n² + 6
  3. 3. Geometry Equation of a circle

    State the equation of a circle with centre (3, 4) and radius 9

    Answer: (x - 3)² + (y - 4)² = 81
  4. 4. Ratio Changing a ratio

    In ratio 3:2, if the second quantity is 42, what is the first?

    Answer: 63
  5. 5. Statistics Range

    Find the range of: -14, 40, -21, -21, 12

    Answer: 61

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