Keystones — Cornerstone
Five GCSE retrieval questions · 29 July 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 686 + 630
Answer: 686 + 630 = 1316 -
2. Algebra
Collect like terms: 6x + 5y + 4x + 7y
Answer: 10x + 12y -
3. Geometry
Find the hypotenuse of a right triangle with sides 6cm and 8cm
Answer: 10cm -
4. Ratio
Simplify: 4:4:6
Answer: 2:2:3 -
5. Statistics
Find the mean of: 15, 18, 10, 9, 15
Answer: 13.4