Keystones — Cornerstone
Five GCSE retrieval questions · 21 February 2026 · mathsvault.uk/keystones
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1. Number
Add: 81.99 + 3.34
Answer: 81.99 + 3.34 = 85.33 -
2. Algebra
Solve: 4x = 16
Answer: x = 4 -
3. Geometry
Find the area of a circle with radius 5cm
Answer: 78.54cm² -
4. Ratio
Simplify: 16:20:16
Answer: 4:5:4 -
5. Statistics
Calculate the mean of: 44, 27, 27, 17, 50, 22
Answer: 31.2