Keystones — Cornerstone
Five GCSE retrieval questions · 24 July 2026 · mathsvault.uk/keystones
-
1. Number
Calculate: 71 + 40
Answer: 71 + 40 = 111 -
2. Algebra
Expand: 4(x + 7)
Answer: 4x + 28 -
3. Geometry
Calculate the area of a circle with diameter 21cm
Answer: 346.36cm² -
4. Ratio
Simplify the ratio 30:15
Answer: 2:1 -
5. Statistics
Find the range of: 11, 21, 14, 18, 25
Answer: 14