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Capstone · Grades 7–9 Keystones #176 25 June 2026 Skills week 5 of 7
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Keystones — Capstone

Five GCSE retrieval questions · 25 June 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — powers of powers

    Simplify: ((a4)2)2

    Answer: a16
  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 (7, 6) and radius 10

    Answer: (x - 7)² + (y - 6)² = 100
  4. 4. Ratio Changing a ratio

    In ratio 6:5, if the second quantity is 44, what is the first?

    Answer: 52.8
  5. 5. Statistics Range

    Find the range of: -2, 7, -13, 21, -2

    Answer: 34

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