Keystones — Capstone
Five GCSE retrieval questions · 10 September 2025 · 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: 18x² + 18x
Answer: 3x(6x + 6) -
3. Geometry
Adjacent = 19cm, hypotenuse = 27cm. Find the angle
Answer: 45.3° -
4. Ratio
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics
A spinner has 6 red, 5 blue and 4 green sections. Probability of landing on red?
Answer: 2⁄5