Keystones — Lintel
Five GCSE retrieval questions · 6 January 2026 · mathsvault.uk/keystones
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1. Number Mixed index laws
Simplify: (a3)3 × a3
Answer: a12 -
2. Algebra Unknowns on both sides
Solve: 7x - 6 = 5x + -2
Answer: x = 2 -
3. Geometry Distance between two points
Calculate the distance between (10, 3) and (13, 7)
Answer: 5 -
4. Ratio Repeated percentage change
A value of 333 increases by 9% each year for 3 years. Final value?
Answer: 431.24 -
5. Statistics Median
Find the median of: 59, 64, 38, 36, 76, 61, 21, 60, 35, 79, 73
Answer: 60