Keystones — Cornerstone
Five GCSE retrieval questions · 9 November 2025 · mathsvault.uk/keystones
-
1. Number
Calculate: 80 + 83
Answer: 80 + 83 = 163 -
2. Algebra
Solve: 5x = 70
Answer: x = 14 -
3. Geometry
Calculate the hypotenuse when a = 12cm and b = 8cm
Answer: 14.42cm -
4. Ratio
Calculate 10% of 136
Answer: 13.6 -
5. Statistics
Find the range of: 16, 21, 28, 28, 17
Answer: 12