Keystones — Lintel
Five GCSE retrieval questions · 1 November 2026 · mathsvault.uk/keystones
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1. Number Mixed index laws
Simplify: y3 × (y2)2 ÷ y1
Answer: y6 -
2. Algebra Unknowns on both sides
Solve: 5x - 5 = 3x + 5
Answer: x = 5 -
3. Geometry Distance between two points
Find the distance between (0, -5) and (10, 5)
Answer: 14.14 -
4. Ratio Repeated percentage change
A car worth £15,983.00 depreciates by 18% each year for 3 years. What is it worth after 3 years?
Answer: £8,812.51 -
5. Statistics Median
Calculate the median of: 14, 11, 34, 34, 15, 12
Answer: 14.5