Keystones — Capstone
Five GCSE retrieval questions · 5 September 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 150. What are the numbers?
Answer: 49, 50, and 51 -
2. Algebra
Solve: x⁄3 = 11.666666666667
Answer: x = 35 -
3. Geometry
Adjacent = 16cm, hypotenuse = 33cm. Find the angle
Answer: 61° -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 25. If 3 of them are 27, 15, 22, what is the missing number?
Answer: 36