Keystones — Lintel
Five GCSE retrieval questions · 9 September 2026 · mathsvault.uk/keystones
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1. Number Mixed index laws
Simplify: (a2)2 × a3
Answer: a7 -
2. Algebra Unknowns on both sides
Solve: 8x + 12 = 6x - 8
Answer: x = 10 -
3. Geometry Distance between two points
Calculate the distance between (1, 10) and (4, 14)
Answer: 5 -
4. Ratio Repeated percentage change
A value of 228 increases by 10% each year for 3 years. Final value?
Answer: 303.47 -
5. Statistics Median
Calculate the median of: 29, 11, 31, 18, 12, 24
Answer: 21