Keystones — Lintel
Five GCSE retrieval questions · 7 September 2026 · mathsvault.uk/keystones
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1. Number Mixed index laws
Simplify: y2 × (y4)3 ÷ y3
Answer: y11 -
2. Algebra Unknowns on both sides
Solve: 9x - 5 = 7x + 3
Answer: x = 4 -
3. Geometry Distance between two points
Find the distance between (-2, -2) and (11, 11)
Answer: 18.38 -
4. Ratio Repeated percentage change
A value of 394 increases by 9% each year for 3 years. Final value?
Answer: 510.24 -
5. Statistics Median
Find the median of: 78, 47, 29, 61, 25, 37, 22, 32, 63, 75
Answer: 47