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Capstone · Grades 7–9 Keystones #75 16 March 2026 Skills week 5 of 7
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Keystones — Capstone

Five GCSE retrieval questions · 16 March 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — powers of powers

    Simplify: ((a4)2)3

    Answer: a24
  2. 2. Algebra Quadratic nth term

    Determine the nth term: 5, 11, 21, 35, ...

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

    State the equation of a circle with centre (7, 2) and radius 4

    Answer: (x - 7)² + (y - 2)² = 16
  4. 4. Ratio Changing a ratio

    In ratio 5:4, if the second quantity is 51, what is the first?

    Answer: 63.8
  5. 5. Statistics Range

    Find the range of: 40, -2, 21, -24, -11

    Answer: 64

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