Keystones — Capstone
Five GCSE retrieval questions · 5 April 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 126. What are the numbers?
Answer: 41, 42, and 43 -
2. Algebra
Factorise fully: 20x² + 8x
Answer: 4x(5x + 2) -
3. Geometry
Find the distance between (-6, -1) and (10, 3)
Answer: 16.49 -
4. Ratio
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics
A spinner has 5 red, 3 blue and 5 green sections. Probability of landing on red?
Answer: 5⁄13