Keystones — Cornerstone
Five GCSE retrieval questions · 23 March 2026 · mathsvault.uk/keystones
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1. Number
What is the missing number: 88 + ? = 101
Answer: 13 -
2. Algebra
Solve: 7x = 105
Answer: x = 15 -
3. Geometry
Find the area of a circle with radius 3cm
Answer: 28.27cm² -
4. Ratio
Simplify the ratio 24:18
Answer: 4:3 -
5. Statistics
Find the mean of: 3, 13, 16, 12
Answer: 11