Keystones — Cornerstone
Five GCSE retrieval questions · 6 November 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 84 + 51
Answer: 84 + 51 = 135 -
2. Algebra
Collect like terms: 5x + 7y + 3x + 5y
Answer: 8x + 12y -
3. Geometry
Calculate the distance between (1, 4) and (4, 8)
Answer: 5 -
4. Ratio
Simplify the ratio 24:15
Answer: 8:5 -
5. Statistics
Find the mean of: 17, 7, 17, 2
Answer: 10.75