Keystones — Cornerstone
Five GCSE retrieval questions · 23 March 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 56 + 25
Answer: 56 + 25 = 81 -
2. Algebra
What is the next term? 5, 15, 45, 135, ...
Answer: 405 -
3. Geometry
Calculate the hypotenuse when a = 6cm and b = 10cm
Answer: 11.66cm -
4. Ratio
Simplify: 12:4:6
Answer: 6:2:3 -
5. Statistics
Calculate the mean of: 25, 30, 43, 34, 14, 44, 16
Answer: 29.4