Keystones — Capstone
Five GCSE retrieval questions · 31 May 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 1⁄2 + 3⁄5 + 2⁄5
Answer: 3⁄2 -
2. Algebra
Solve: x⁄2 = 19
Answer: x = 38 -
3. Geometry
Adjacent = 28cm, hypotenuse = 38cm. Find the angle
Answer: 42.5° -
4. Ratio
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 36. If 4 of them are 35, 38, 39, 38, what is the missing number?
Answer: 30