Keystones — Cornerstone
Five GCSE retrieval questions · 15 March 2026 · mathsvault.uk/keystones
-
1. Number Rounding to significant figures
Round 944 to 1 significant figure
Answer: 900 -
2. Algebra Factorising into a single bracket
Factorise: 14x + 16
Answer: 2(7x + 8) -
3. Geometry Speed, distance and time
A car travels at 74km/h for 2 hours. How far does it travel?
Answer: 148km -
4. Ratio Percentage increase and decrease
Increase 57 by 20%
Answer: 68.4 -
5. Statistics Simple probability
A bag has 6 red and 7 blue balls. What is the probability of picking a red ball?
Answer: 6⁄13