Keystones — Lintel
Five GCSE retrieval questions · 22 August 2025 · mathsvault.uk/keystones
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1. Number
Simplify: 5√2 - 3√2
Answer: 2√2 -
2. Algebra
Solve: 9x = 90
Answer: x = 10 -
3. Geometry
Adjacent = 24cm, hypotenuse = 33cm. Find the angle
Answer: 43.3° -
4. Ratio
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics
A spinner has 3 red, 4 blue and 6 green sections. Probability of landing on red?
Answer: 3⁄13