Keystones — Capstone
Five GCSE retrieval questions · 31 August 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 993 + 842
Answer: 1835 -
2. Algebra
Solve: x⁄8 = 1.625
Answer: x = 13 -
3. Geometry
Adjacent = 20cm, hypotenuse = 31cm. Find the angle
Answer: 49.8° -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
The mean of 6 numbers is 33. If 5 of them are 29, 49, 37, 36, 40, what is the missing number?
Answer: 7