Keystones — Cornerstone
Five GCSE retrieval questions · 29 June 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 66 + 69
Answer: 66 + 69 = 135 -
2. Algebra
Factorise: 40x + 20
Answer: 5(8x + 4) -
3. Geometry
Calculate the area of a circle with diameter 8cm
Answer: 50.27cm² -
4. Ratio
Find 54% of 437
Answer: 235.98 -
5. Statistics
Calculate the range of: 61, 72, 37, 43, 41, 68
Answer: 35