Keystones — Lintel
Five GCSE retrieval questions · 15 June 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 141. What are the numbers?
Answer: 46, 47, and 48 -
2. Algebra
Solve: 4x = 44
Answer: x = 11 -
3. Geometry
Find c if a = 9cm and b = 12cm in a right triangle
Answer: 15cm -
4. Ratio
Simplify: 12:12:24
Answer: 1:1:2 -
5. Statistics
A spinner has 3 red, 3 blue and 6 green sections. Probability of landing on red?
Answer: 1⁄4