Keystones — Lintel
Five GCSE retrieval questions · 17 October 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 114. What are the numbers?
Answer: 37, 38, and 39 -
2. Algebra
Solve: x⁄4 = 6.25
Answer: x = 25 -
3. Geometry
Opposite = 9cm, adjacent = 12cm. Calculate the angle
Answer: 36.9° -
4. Ratio
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics
A spinner has 6 red, 3 blue and 5 green sections. Probability of landing on red?
Answer: 3⁄7