Keystones — Capstone
Five GCSE retrieval questions · 9 May 2026 · mathsvault.uk/keystones
-
1. Number Index law — powers of powers
Simplify: ((a3)3)3
Answer: a27 -
2. Algebra Quadratic nth term
Determine the nth term: 6, 12, 22, 36, ...
Answer: 2n² + 4 -
3. Geometry Equation of a circle
State the equation of a circle with centre (7, 8) and radius 7
Answer: (x - 7)² + (y - 8)² = 49 -
4. Ratio Changing a ratio
In ratio 2:1, if the second quantity is 24, what is the first?
Answer: 48 -
5. Statistics Range
Find the range of: -3, 17, -30, 35, -21
Answer: 65