Keystones — Capstone
Five GCSE retrieval questions · 25 October 2025 · mathsvault.uk/keystones
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1. Number
The temperature is -7°C. It rises by 13°C. What is the new temperature?
Answer: 6°C -
2. Algebra
Factorise fully: 8x² + 24x
Answer: 4x(2x + 6) -
3. Geometry
Adjacent = 17cm, hypotenuse = 22cm. Find the angle
Answer: 39.4° -
4. Ratio
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics
A spinner has 5 red, 5 blue and 6 green sections. Probability of landing on red?
Answer: 5⁄16