Keystones — Cornerstone
Five GCSE retrieval questions · 16 May 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 69 + 41
Answer: 69 + 41 = 110 -
2. Algebra
Factorise: 8x² + 9x
Answer: x(8x + 9) -
3. Geometry
Find the area of a circle with radius 9cm
Answer: 254.47cm² -
4. Ratio
Find 76% of 117
Answer: 88.92 -
5. Statistics
Find the mean of: 19, 7, 14, 6, 10
Answer: 11.2