Keystones — Cornerstone
Five GCSE retrieval questions · 23 January 2026 · mathsvault.uk/keystones
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1. Number Rounding to significant figures
Round 7932 to 2 significant figures
Answer: 7900 -
2. Algebra Factorising into a single bracket
Factorise: 5x² + 8x
Answer: x(5x + 8) -
3. Geometry Speed, distance and time
A car travels at 40km/h for 5 hours. How far does it travel?
Answer: 200km -
4. Ratio Percentage increase and decrease
Increase 68 by 10%
Answer: 74.8 -
5. Statistics Simple probability
What is the probability of getting heads when flipping a fair coin?
Answer: 1⁄2