Keystones — Lintel
Five GCSE retrieval questions · 16 October 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 94 + ? = 166
Answer: 72 -
2. Algebra
Solve: 7x = 56
Answer: x = 8 -
3. Geometry
Adjacent = 18cm, hypotenuse = 33cm. Find the angle
Answer: 56.9° -
4. Ratio
Calculate 13.2% of 340
Answer: 44.88 -
5. Statistics
Calculate the mean of: 34, 41, 19, 15, 15, 8
Answer: 22