Keystones — Capstone
Five GCSE retrieval questions · 29 September 2026 · mathsvault.uk/keystones
-
1. Number Index law — powers of powers
Simplify: ((a2)2)2
Answer: a8 -
2. Algebra Quadratic nth term
Determine the nth term: 9, 15, 25, 39, ...
Answer: 2n² + 7 -
3. Geometry Equation of a circle
State the equation of a circle with centre (7, 3) and radius 3
Answer: (x - 7)² + (y - 3)² = 9 -
4. Ratio Changing a ratio
In ratio 1:2, if the second quantity is 28, what is the first?
Answer: 14 -
5. Statistics Range
Find the range of: -14, 20, 18, 24, 26
Answer: 40