Keystones — Capstone
Five GCSE retrieval questions · 4 February 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 = 3.3333333333333
Answer: x = 10 -
3. Geometry
Adjacent = 21cm, hypotenuse = 29cm. Find the angle
Answer: 43.6° -
4. Ratio
Calculate 45.3% of 480
Answer: 217.44 -
5. Statistics
The mean of 4 numbers is 35. If 3 of them are 21, 18, 17, what is the missing number?
Answer: 84