Keystones — Cornerstone
Five GCSE retrieval questions · 13 October 2025 · mathsvault.uk/keystones
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1. Number
Find the total of 122, 100, and 102
Answer: 324 -
2. Algebra
Factorise: 48x + 12
Answer: 6(8x + 2) -
3. Geometry
Calculate the area of a circle with diameter 11cm
Answer: 95.03cm² -
4. Ratio
Find 55% of 305
Answer: 167.75 -
5. Statistics
Find the range of: 43, 24, 35, 18, 45
Answer: 27