Keystones — Capstone
Five GCSE retrieval questions · 18 March 2026 · mathsvault.uk/keystones
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1. Number Index law — powers of powers
Simplify: ((a2)3)3
Answer: a18 -
2. Algebra Quadratic nth term
Determine the nth term: 13, 25, 45, 73, ...
Answer: 4n² + 9 -
3. Geometry Equation of a circle
State the equation of a circle with centre (3, 3) and radius 4
Answer: (x - 3)² + (y - 3)² = 16 -
4. Ratio Changing a ratio
In ratio 5:6, if the second quantity is 59, what is the first?
Answer: 49.2 -
5. Statistics Range
Find the range of: 32, -9, -16, 24, 43
Answer: 59