Keystones — Cornerstone
Five GCSE retrieval questions · 4 March 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 40 + 28
Answer: 40 + 28 = 68 -
2. Algebra
What is the next term? 8, 24, 72, 216, ...
Answer: 648 -
3. Geometry
Find the perimeter of a right triangle with sides 5cm, 12cm, 13cm
Answer: 30cm -
4. Ratio
Simplify: 6:9:12
Answer: 2:3:4 -
5. Statistics
Find the mean of: 6, 15, 8, 4, 16
Answer: 9.8