Keystones — Capstone
Five GCSE retrieval questions · 8 May 2026 · mathsvault.uk/keystones
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1. Number Index law — powers of powers
Simplify: ((a2)3)2
Answer: a12 -
2. Algebra Quadratic nth term
Determine the nth term: 4, 10, 20, 34, ...
Answer: 2n² + 2 -
3. Geometry Equation of a circle
State the equation of a circle with centre (2, 3) and radius 10
Answer: (x - 2)² + (y - 3)² = 100 -
4. Ratio Changing a ratio
In ratio 5:2, if the second quantity is 52, what is the first?
Answer: 130 -
5. Statistics Range
Find the range of: 3, 23, -15, 0, 11
Answer: 38