Keystones — Lintel
Five GCSE retrieval questions · 1 March 2026 · mathsvault.uk/keystones
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1. Number Mixed index laws
Simplify: (a4)2 × a3
Answer: a11 -
2. Algebra Unknowns on both sides
Solve: 8x + 12 = 7x - 4
Answer: x = 16 -
3. Geometry Distance between two points
Find the distance between (1, -2) and (8, 7)
Answer: 11.4 -
4. Ratio Repeated percentage change
A car worth £8,107.00 depreciates by 15% each year for 3 years. What is it worth after 3 years?
Answer: £4,978.71 -
5. Statistics Median
Calculate the median of: 36, 26, 24, 16, 27, 31
Answer: 26.5