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Capstone · Grades 7–9 Keystones #179 28 June 2026 Skills week 5 of 7
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Keystones — Capstone

Five GCSE retrieval questions · 28 June 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — powers of powers

    Simplify: ((a3)3)3

    Answer: a27
  2. 2. Algebra Quadratic nth term

    Determine the nth term: 14, 26, 46, 74, ...

    Answer: 4n² + 10
  3. 3. Geometry Equation of a circle

    State the equation of a circle with centre (8, 5) and radius 10

    Answer: (x - 8)² + (y - 5)² = 100
  4. 4. Ratio Changing a ratio

    In ratio 5:4, if the second quantity is 44, what is the first?

    Answer: 55
  5. 5. Statistics Range

    Find the range of: 38, 40, 9, -2, -22

    Answer: 62

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