Keystones — Lintel
Five GCSE retrieval questions · 6 November 2025 · mathsvault.uk/keystones
-
1. Number
Calculate: 997 + 889
Answer: 1886 -
2. Algebra
Solve: 8x = 88
Answer: x = 11 -
3. Geometry
Adjacent = 16cm, hypotenuse = 29cm. Find the angle
Answer: 56.5° -
4. Ratio
Calculate 32.5% of 640
Answer: 208 -
5. Statistics
A bag has 8 red and 8 blue balls. What is the probability of picking a red ball?
Answer: 1⁄2