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Capstone · Grades 7–9 Keystones #177 26 June 2026 Skills week 5 of 7
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Keystones — Capstone

Five GCSE retrieval questions · 26 June 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: 4, 10, 20, 34, ...

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

    State the equation of a circle with centre (2, 6) and radius 7

    Answer: (x - 2)² + (y - 6)² = 49
  4. 4. Ratio Changing a ratio

    In ratio 3:5, if the second quantity is 58, what is the first?

    Answer: 34.8
  5. 5. Statistics Range

    Find the range of: 24, -13, 18, 30, -4

    Answer: 43

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