Keystones — Capstone
Five GCSE retrieval questions · 3 August 2025 · mathsvault.uk/keystones
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1. Number
Calculate: (-25) + (-12) + (-18)
Answer: -55 -
2. Algebra
Solve: x⁄5 = 5.4
Answer: x = 27 -
3. Geometry
Adjacent = 24cm, hypotenuse = 43cm. Find the angle
Answer: 56.1° -
4. Ratio
Calculate 23.9% of 445
Answer: 106.36 -
5. Statistics
The mean of 5 numbers is 36. If 4 of them are 43, 22, 19, 17, what is the missing number?
Answer: 79