Keystones — Capstone
Five GCSE retrieval questions · 23 June 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 126. What are the numbers?
Answer: 41, 42, and 43 -
2. Algebra
Solve: x⁄2 = 20
Answer: x = 40 -
3. Geometry
A right triangle has hypotenuse 5cm and one side 3cm. Find its area
Answer: 6cm² -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
The mean of 6 numbers is 34. If 5 of them are 46, 22, 50, 28, 47, what is the missing number?
Answer: 11