Keystones — Lintel
Five GCSE retrieval questions · 24 July 2026 · mathsvault.uk/keystones
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1. Number Mixed index laws
Simplify: (a2)4 × a3
Answer: a11 -
2. Algebra Unknowns on both sides
Solve: 5x + 5 = 2x - 4
Answer: x = 3 -
3. Geometry Distance between two points
Calculate the distance between (4, 10) and (7, 14)
Answer: 5 -
4. Ratio Repeated percentage change
A car worth £19,711.00 depreciates by 11% each year for 3 years. What is it worth after 3 years?
Answer: £13,895.64 -
5. Statistics Median
Calculate the median of: 10, 13, 34, 19, 27, 18
Answer: 18.5