Keystones — Capstone
Five GCSE retrieval questions · 16 May 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 2⁄3 + 1⁄3 + 3⁄5
Answer: 8⁄5 -
2. Algebra
Solve: x⁄3 = 4
Answer: x = 12 -
3. Geometry
Adjacent = 24cm, hypotenuse = 31cm. Find the angle
Answer: 39.3° -
4. Ratio
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 31. If 4 of them are 30, 46, 47, 19, what is the missing number?
Answer: 13