Keystones — Cornerstone
Five GCSE retrieval questions · 7 May 2026 · mathsvault.uk/keystones
-
1. Number
Calculate: 68 + 47
Answer: 68 + 47 = 115 -
2. Algebra
Expand: 5(5x + 9)
Answer: 25x + 45 -
3. Geometry
Calculate perimeter: two sides are 6cm and 14cm at right angles
Answer: 35.2cm -
4. Ratio
Simplify the ratio 15:40
Answer: 3:8 -
5. Statistics
Calculate the range of: 92, 43, 73, 92, 89, 46
Answer: 49