Keystones — Capstone
Five GCSE retrieval questions · 7 January 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 123. What are the numbers?
Answer: 40, 41, and 42 -
2. Algebra
Simplify: 12x - 6x + 5y - 2y
Answer: 6x + 3y -
3. Geometry
Adjacent = 17cm, hypotenuse = 26cm. Find the angle
Answer: 49.2° -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 24. If 4 of them are 20, 25, 36, 25, what is the missing number?
Answer: 14