Keystones — Capstone
Five GCSE retrieval questions · 6 December 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 147. What are the numbers?
Answer: 48, 49, and 50 -
2. Algebra
Solve: x⁄6 = 1.6666666666667
Answer: x = 10 -
3. Geometry
Adjacent = 25cm, hypotenuse = 36cm. Find the angle
Answer: 46° -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
A spinner has 6 red, 3 blue and 2 green sections. Probability of landing on red?
Answer: 6⁄11