Keystones — Lintel
Five GCSE retrieval questions · 31 May 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 250 + 399
Answer: 250 + 399 = 649 -
2. Algebra
Expand: 3(2x + 2)
Answer: 6x + 6 -
3. Geometry
Calculate the area of a circle with diameter 9cm
Answer: 63.62cm² -
4. Ratio
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics
Calculate the mean of: 49, 25, 19, 50, 23, 26, 25, 18
Answer: 29.4