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Capstone · Grades 7–9 Keystones #276 3 October 2026 Skills week 5 of 7
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Keystones — Capstone

Five GCSE retrieval questions · 3 October 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — powers of powers

    Simplify: ((a4)3)3

    Answer: a36
  2. 2. Algebra Quadratic nth term

    Determine the nth term: 4, 13, 28, 49, ...

    Answer: 3n² + 1
  3. 3. Geometry Equation of a circle

    State the equation of a circle with centre (6, 5) and radius 10

    Answer: (x - 6)² + (y - 5)² = 100
  4. 4. Ratio Changing a ratio

    In ratio 5:2, if the second quantity is 42, what is the first?

    Answer: 105
  5. 5. Statistics Range

    Find the range of: -19, 6, -19, 34, -1

    Answer: 53

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