Keystones — Cornerstone
Five GCSE retrieval questions · 11 April 2026 · mathsvault.uk/keystones
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1. Number
What is √64?
Answer: 8 -
2. Algebra
Find the next term: 6, 15, 24, 33, ...
Answer: 42 -
3. Geometry
Find the perimeter of a right triangle with sides 6cm, 8cm, 10cm
Answer: 24cm -
4. Ratio
Find 68% of 124
Answer: 84.32 -
5. Statistics
Calculate the range of: 59, 89, 78, 78, 71, 37
Answer: 52