Keystones — Lintel
Five GCSE retrieval questions · 10 September 2026 · mathsvault.uk/keystones
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1. Number Mixed index laws
Simplify: y5 × (y4)4 ÷ y2
Answer: y19 -
2. Algebra Unknowns on both sides
Solve: 7x + 8 = 3x - 9
Answer: x = 4.3 -
3. Geometry Distance between two points
Find the distance between (-6, -8) and (10, 7)
Answer: 21.93 -
4. Ratio Repeated percentage change
A value of 410 increases by 12% each year for 3 years. Final value?
Answer: 576.02 -
5. Statistics Median
Calculate the median of: 15, 26, 33, 25, 31, 31
Answer: 28.5