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Capstone · Grades 7–9 Keystones #81 22 March 2026 Skills week 5 of 7
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Keystones — Capstone

Five GCSE retrieval questions · 22 March 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — powers of powers

    Simplify: ((a3)2)2

    Answer: a12
  2. 2. Algebra Quadratic nth term

    Determine the nth term: 12, 18, 28, 42, ...

    Answer: 2n² + 10
  3. 3. Geometry Equation of a circle

    State the equation of a circle with centre (6, 7) and radius 3

    Answer: (x - 6)² + (y - 7)² = 9
  4. 4. Ratio Changing a ratio

    In ratio 3:2, if the second quantity is 39, what is the first?

    Answer: 58.5
  5. 5. Statistics Range

    Find the range of: 22, 28, 38, 17, -16

    Answer: 54

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