Keystones — Cornerstone
Five GCSE retrieval questions · 11 June 2025 · mathsvault.uk/keystones
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1. Number
Calculate: -5 + (31)
Answer: 26 -
2. Algebra
Collect like terms: 6x + 8y + 2x + 3y
Answer: 8x + 11y -
3. Geometry
Find the hypotenuse of a right triangle with sides 8cm and 15cm
Answer: 17cm -
4. Ratio
Simplify the ratio 15:35
Answer: 3:7 -
5. Statistics
Find the mean of: 15, 13, 14
Answer: 14