Keystones — Cornerstone
Five GCSE retrieval questions · 19 June 2026 · mathsvault.uk/keystones
-
1. Number
Calculate: 53 + 72
Answer: 53 + 72 = 125 -
2. Algebra
Factorise: 3x² + 8x
Answer: x(3x + 8) -
3. Geometry
Opposite = 16cm, adjacent = 14cm. Calculate the angle
Answer: 48.8° -
4. Ratio
Calculate 10% of 78
Answer: 7.8 -
5. Statistics
Find the mean of: 15, 12, 9, 15
Answer: 12.75