Keystones — Capstone
Five GCSE retrieval questions · 4 July 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 108. What are the numbers?
Answer: 35, 36, and 37 -
2. Algebra
Factorise fully: 12x² + 6x
Answer: 2x(6x + 3) -
3. Geometry
Adjacent = 19cm, hypotenuse = 39cm. Find the angle
Answer: 60.8° -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
A spinner has 4 red, 3 blue and 3 green sections. Probability of landing on red?
Answer: 2⁄5