Keystones — Lintel
Five GCSE retrieval questions · 2 June 2026 · mathsvault.uk/keystones
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1. Number Mixed index laws
Simplify: (a3)4 × a3
Answer: a15 -
2. Algebra Unknowns on both sides
Solve: 5x + 5 = 3x - 9
Answer: x = 7 -
3. Geometry Distance between two points
Find the distance between (-5, -2) and (11, 11)
Answer: 20.62 -
4. Ratio Repeated percentage change
A car worth £9,739.00 depreciates by 12% each year for 4 years. What is it worth after 4 years?
Answer: £5,840.43 -
5. Statistics Median
Find the median of: 20, 67, 22, 41, 50, 20, 60, 37, 58
Answer: 41