Keystones — Capstone
Five GCSE retrieval questions · 14 March 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 90. What are the numbers?
Answer: 29, 30, and 31 -
2. Algebra
Factorise fully: 16x² + 28x
Answer: 4x(4x + 7) -
3. Geometry
Adjacent = 25cm, hypotenuse = 43cm. Find the angle
Answer: 54.5° -
4. Ratio
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics
A spinner has 2 red, 6 blue and 3 green sections. Probability of landing on red?
Answer: 2⁄11