Keystones — Lintel
Five GCSE retrieval questions · 27 July 2026 · mathsvault.uk/keystones
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1. Number
What is the missing number: 97 + ? = 177
Answer: 80 -
2. Algebra
Factorise fully: 8x² + 14x
Answer: 2x(4x + 7) -
3. Geometry
Calculate the area of a circle with diameter 22cm
Answer: 380.13cm² -
4. Ratio
Calculate 25.6% of 969
Answer: 248.06 -
5. Statistics
Calculate the mean of: 39, 11, 45, 24, 44, 5
Answer: 28