Keystones — Capstone
Five GCSE retrieval questions · 20 June 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 141. What are the numbers?
Answer: 46, 47, and 48 -
2. Algebra
Solve: x⁄4 = 2.5
Answer: x = 10 -
3. Geometry
Adjacent = 17cm, hypotenuse = 24cm. Find the angle
Answer: 44.9° -
4. Ratio
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics
The mean of 6 numbers is 23. If 5 of them are 20, 33, 47, 35, 26, what is the missing number?
Answer: -23