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Capstone · Grades 7–9 Keystones #273 30 September 2026 Skills week 5 of 7
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Keystones — Capstone

Five GCSE retrieval questions · 30 September 2026 · mathsvault.uk/keystones

  1. 1. Number Index law — powers of powers

    Simplify: ((a4)3)2

    Answer: a24
  2. 2. Algebra Quadratic nth term

    Determine the nth term: 5, 14, 29, 50, ...

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

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

    Answer: (x - 3)² + (y - 3)² = 64
  4. 4. Ratio Changing a ratio

    In ratio 5:6, if the second quantity is 38, what is the first?

    Answer: 31.7
  5. 5. Statistics Range

    Find the range of: -30, 37, 25, 32, -20

    Answer: 67

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