Keystones — Capstone
Five GCSE retrieval questions · 19 September 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 129. What are the numbers?
Answer: 42, 43, and 44 -
2. Algebra
Factorise fully: 14x² + 14x
Answer: 2x(7x + 7) -
3. Geometry
Adjacent = 30cm, hypotenuse = 49cm. Find the angle
Answer: 52.2° -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
A spinner has 2 red, 3 blue and 2 green sections. Probability of landing on red?
Answer: 2⁄7