Keystones — Cornerstone
Five GCSE retrieval questions · 18 March 2025 · mathsvault.uk/keystones
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1. Number
Find the total of 259, 214, and 144
Answer: 617 -
2. Algebra
Find the next term: 13, 23, 33, 43, ...
Answer: 53 -
3. Geometry
Find the hypotenuse of a right triangle with sides 8cm and 15cm
Answer: 17cm -
4. Ratio
Simplify: 8:24:8
Answer: 1:3:1 -
5. Statistics
Calculate the mean of: 17, 22, 7, 16, 12, 22, 40, 9
Answer: 18.1