Keystones — Cornerstone
Five GCSE retrieval questions · 13 March 2026 · mathsvault.uk/keystones
-
1. Number Rounding to significant figures
Round 6906 to 2 significant figures
Answer: 6900 -
2. Algebra Factorising into a single bracket
Factorise: 5x² + 3x
Answer: x(5x + 3) -
3. Geometry Speed, distance and time
A cyclist travels 380km in 6 hours. What is their average speed?
Answer: 63.333333333333km/h -
4. Ratio Percentage increase and decrease
Decrease 271 by 32%
Answer: 184.28 -
5. Statistics Simple probability
A bag has 8 red and 6 blue balls. What is the probability of picking a red ball?
Answer: 4⁄7