Keystones — Cornerstone
Five GCSE retrieval questions · 8 May 2026 · mathsvault.uk/keystones
-
1. Number
Calculate: 72 + 40
Answer: 72 + 40 = 112 -
2. Algebra
Solve: 5x = 75
Answer: x = 15 -
3. Geometry
Calculate the area of a circle with diameter 15cm
Answer: 176.71cm² -
4. Ratio
Simplify the ratio 16:8
Answer: 2:1 -
5. Statistics
Calculate the mean of: 18, 40, 46, 48, 34, 31, 16
Answer: 33.3