Keystones — Capstone
Five GCSE retrieval questions · 19 April 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 123. What are the numbers?
Answer: 40, 41, and 42 -
2. Algebra
Factorise fully: 6x² + 15x
Answer: 3x(2x + 5) -
3. Geometry
Find the distance between (-1, -6) and (12, 6)
Answer: 17.69 -
4. Ratio
Calculate 20% of 851
Answer: 170.2 -
5. Statistics
A spinner has 2 red, 2 blue and 2 green sections. Probability of landing on red?
Answer: 1⁄3