Keystones — Capstone
Five GCSE retrieval questions · 9 August 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: 16x² + 28x
Answer: 4x(4x + 7) -
3. Geometry
Adjacent = 19cm, hypotenuse = 39cm. Find the angle
Answer: 60.8° -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
A spinner has 4 red, 5 blue and 4 green sections. Probability of landing on red?
Answer: 4⁄13