Keystones — Lintel
Five GCSE retrieval questions · 18 April 2026 · mathsvault.uk/keystones
-
1. Number Mixed index laws
Simplify: y5 × (y2)4 ÷ y1
Answer: y12 -
2. Algebra Unknowns on both sides
Solve: 7x - 7 = 4x + 11
Answer: x = 6 -
3. Geometry Distance between two points
Calculate the distance between (7, 10) and (10, 14)
Answer: 5 -
4. Ratio Repeated percentage change
A car worth £18,061.00 depreciates by 15% each year for 4 years. What is it worth after 4 years?
Answer: £9,427.95 -
5. Statistics Median
Find the median of: 67, 78, 66, 34, 68, 35, 31, 72, 60, 78, 37
Answer: 66