Keystones — Lintel
Five GCSE retrieval questions · 23 July 2026 · mathsvault.uk/keystones
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1. Number Mixed index laws
Simplify: y4 × (y4)4 ÷ y2
Answer: y18 -
2. Algebra Unknowns on both sides
Solve: 8x + 7 = 7x - 7
Answer: x = 14 -
3. Geometry Distance between two points
Calculate the distance between (7, 2) and (10, 6)
Answer: 5 -
4. Ratio Repeated percentage change
A value of 410 increases by 11% each year for 3 years. Final value?
Answer: 560.73 -
5. Statistics Median
Find the median of: 75, 61, 69, 66, 56, 77, 79, 61, 33
Answer: 66