Keystones — Capstone
Five GCSE retrieval questions · 2 October 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 993 + 667
Answer: 1660 -
2. Algebra
Solve: x⁄6 = 3
Answer: x = 18 -
3. Geometry
Find c if a = 15cm and b = 18cm in a right triangle
Answer: 23.4cm -
4. Ratio
Calculate 12.8% of 777
Answer: 99.46 -
5. Statistics
A spinner has 4 red, 5 blue and 3 green sections. Probability of landing on red?
Answer: 1⁄3