Keystones — Capstone
Five GCSE retrieval questions · 29 June 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 996 + 831
Answer: 1827 -
2. Algebra
Solve: x⁄8 = 2.5
Answer: x = 20 -
3. Geometry
Adjacent = 29cm, hypotenuse = 42cm. Find the angle
Answer: 46.3° -
4. Ratio
Calculate 29.1% of 866
Answer: 252.01 -
5. Statistics
The mean of 6 numbers is 30. If 5 of them are 16, 24, 38, 21, 31, what is the missing number?
Answer: 50