Keystones — Lintel
Five GCSE retrieval questions · 5 June 2026 · mathsvault.uk/keystones
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1. Number Mixed index laws
Simplify: (a4)4 × a2
Answer: a18 -
2. Algebra Unknowns on both sides
Solve: 3x + 11 = x - 7
Answer: x = 9 -
3. Geometry Distance between two points
Find the distance between (0, -7) and (8, 9)
Answer: 17.89 -
4. Ratio Repeated percentage change
A value of 353 increases by 7% each year for 3 years. Final value?
Answer: 432.44 -
5. Statistics Median
Calculate the median of: 25, 24, 15, 17, 40, 37
Answer: 24.5