Keystones — Capstone
Five GCSE retrieval questions · 17 December 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 90. What are the numbers?
Answer: 29, 30, and 31 -
2. Algebra
Solve: x⁄8 = 2.375
Answer: x = 19 -
3. Geometry
Adjacent = 26cm, hypotenuse = 45cm. Find the angle
Answer: 54.7° -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
A spinner has 6 red, 5 blue and 4 green sections. Probability of landing on red?
Answer: 2⁄5