Keystones — Capstone
Five GCSE retrieval questions · 22 May 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 117. What are the numbers?
Answer: 38, 39, and 40 -
2. Algebra
Factorise fully: 12x² + 24x
Answer: 4x(3x + 6) -
3. Geometry
Adjacent = 13cm, hypotenuse = 22cm. Find the angle
Answer: 53.8° -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
A spinner has 5 red, 4 blue and 6 green sections. Probability of landing on red?
Answer: 1⁄3