Keystones — Lintel
Five GCSE retrieval questions · 22 February 2026 · mathsvault.uk/keystones
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1. Number
The temperature is -10°C. It rises by 9°C. What is the new temperature?
Answer: -1°C -
2. Algebra
Solve: 4x = 28
Answer: x = 7 -
3. Geometry
Adjacent = 12cm, hypotenuse = 31cm. Find the angle
Answer: 67.2° -
4. Ratio
Simplify: 10:6:10
Answer: 5:3:5 -
5. Statistics
A spinner has 5 red, 2 blue and 5 green sections. Probability of landing on red?
Answer: 5⁄12