Keystones — Lintel
Five GCSE retrieval questions · 25 December 2025 · mathsvault.uk/keystones
-
1. Number
The sum of three consecutive numbers is 138. What are the numbers?
Answer: 45, 46, and 47 -
2. Algebra
Factorise: 5x² + 2x
Answer: x(5x + 2) -
3. Geometry
Adjacent = 24cm, hypotenuse = 44cm. Find the angle
Answer: 56.9° -
4. Ratio
Simplify: 16:12:8
Answer: 4:3:2 -
5. Statistics
A spinner has 4 red, 5 blue and 3 green sections. Probability of landing on red?
Answer: 1⁄3