Keystones — Lintel
Five GCSE retrieval questions · 21 August 2025 · mathsvault.uk/keystones
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1. Number
0.00073
Answer: 7.3 × 10^-4 -
2. Algebra
Solve: 6x = 54
Answer: x = 9 -
3. Geometry
Opposite = 20cm, adjacent = 9cm. Calculate the angle
Answer: 65.8° -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
A spinner has 5 red, 4 blue and 5 green sections. Probability of landing on red?
Answer: 5⁄14