Keystones — Lintel
Five GCSE retrieval questions · 18 March 2026 · mathsvault.uk/keystones
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1. Number
Find the missing number: 8.67 + □ = 11.04
Answer: □ = 2.37 -
2. Algebra
Find the next term: 1, 2, 4, 7, ...
Answer: 11 -
3. Geometry
A circle has area 153.9cm². Find its radius (dp)
Answer: 7cm -
4. Ratio
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics
Calculate the mean of: 34, 28, 10, 40, 41, 49, 42
Answer: 34.9