Keystones — Cornerstone
Five GCSE retrieval questions · 14 November 2025 · mathsvault.uk/keystones
-
1. Number
What is the missing number: 67 + ? = 199
Answer: 132 -
2. Algebra
Solve: 2x = 26
Answer: x = 13 -
3. Geometry
Calculate the area of a circle with diameter 17cm
Answer: 226.98cm² -
4. Ratio
Simplify: 10:12:8
Answer: 5:6:4 -
5. Statistics
Calculate the range of: 48, 61, 99, 81, 73, 99
Answer: 51