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Capstone · Grades 7–9 Keystones #76 17 March 2026 Skills week 5 of 7
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Keystones — Capstone

Five GCSE retrieval questions · 17 March 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: 10, 22, 42, 70, ...

    Answer: 4n² + 6
  3. 3. Geometry Equation of a circle

    State the equation of a circle with centre (2, 8) and radius 3

    Answer: (x - 2)² + (y - 8)² = 9
  4. 4. Ratio Changing a ratio

    In ratio 5:4, if the second quantity is 50, what is the first?

    Answer: 62.5
  5. 5. Statistics Range

    Find the range of: 30, -16, 33, 15, 43

    Answer: 59

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