Keystones — Cornerstone
Five GCSE retrieval questions · 23 February 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 828 + 714
Answer: 828 + 714 = 1542 -
2. Algebra
Factorise: 48x + 42
Answer: 6(8x + 7) -
3. Geometry
Find the area of a circle with radius 3cm
Answer: 28.27cm² -
4. Ratio
Simplify: 12:6:6
Answer: 2:1:1 -
5. Statistics
Find the mean of: 15, 2, 7
Answer: 8