Keystones — Capstone
Five GCSE retrieval questions · 29 October 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 147. What are the numbers?
Answer: 48, 49, and 50 -
2. Algebra
Factorise fully: 14x² + 14x
Answer: 2x(7x + 7) -
3. Geometry
Adjacent = 14cm, hypotenuse = 30cm. Find the angle
Answer: 62.2° -
4. Ratio
Calculate 19.2% of 327
Answer: 62.78 -
5. Statistics
The mean of 5 numbers is 29. If 4 of them are 34, 37, 16, 44, what is the missing number?
Answer: 14