Keystones — Lintel
Five GCSE retrieval questions · 25 April 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 111. What are the numbers?
Answer: 36, 37, and 38 -
2. Algebra
Factorise: 5x² + 5x
Answer: 5x(x + 1) -
3. Geometry
Opposite = 15cm, adjacent = 17cm. Calculate the angle
Answer: 41.4° -
4. Ratio
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics
Calculate the mean of: 6, 45, 42, 13, 48, 6
Answer: 26.7