Keystones — Lintel
Five GCSE retrieval questions · 15 October 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 135. What are the numbers?
Answer: 44, 45, and 46 -
2. Algebra
Solve: 6x = 84
Answer: x = 14 -
3. Geometry
Opposite = 12cm, adjacent = 18cm. Calculate the angle
Answer: 33.7° -
4. Ratio
Calculate 29% of 369
Answer: 107.01 -
5. Statistics
Calculate the mean of: 37, 48, 43, 16, 45, 17, 27, 45
Answer: 34.8