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Capstone · Grades 7–9 Keystones #80 21 March 2026 Skills week 5 of 7
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Keystones — Capstone

Five GCSE retrieval questions · 21 March 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: 12, 21, 36, 57, ...

    Answer: 3n² + 9
  3. 3. Geometry Equation of a circle

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

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

    In ratio 3:5, if the second quantity is 22, what is the first?

    Answer: 13.2
  5. 5. Statistics Range

    Find the range of: -30, 46, 11, 16, 12

    Answer: 76

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