Keystones — Lintel
Five GCSE retrieval questions · 10 January 2026 · mathsvault.uk/keystones
-
1. Number
The sum of three consecutive numbers is 102. What are the numbers?
Answer: 33, 34, and 35 -
2. Algebra
Factorise: 6x² + 2x
Answer: 2x(3x + 1) -
3. Geometry
Opposite = 20cm, adjacent = 15cm. Calculate the angle
Answer: 53.1° -
4. Ratio
Simplify: 12:4:10
Answer: 6:2:5 -
5. Statistics
A spinner has 6 red, 4 blue and 3 green sections. Probability of landing on red?
Answer: 6⁄13