Keystones — Capstone
Five GCSE retrieval questions · 1 July 2026 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 138. What are the numbers?
Answer: 45, 46, and 47 -
2. Algebra
Solve: x⁄7 = 3.1428571428571
Answer: x = 22 -
3. Geometry
Adjacent = 27cm, hypotenuse = 33cm. Find the angle
Answer: 35.1° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 23. If 3 of them are 29, 44, 24, what is the missing number?
Answer: -5