Keystones — Lintel
Five GCSE retrieval questions · 6 April 2026 · mathsvault.uk/keystones
-
1. Number
What is the missing number: 77 + ? = 120
Answer: 43 -
2. Algebra
What is the next term? 3, 12, 48, 192, ...
Answer: 768 -
3. Geometry
Opposite = 18cm, adjacent = 13cm. Calculate the angle
Answer: 54.2° -
4. Ratio
Simplify: 8:8:6
Answer: 4:4:3 -
5. Statistics
A bag has 7 red and 6 blue balls. What is the probability of picking a red ball?
Answer: 7⁄13