Keystones — Lintel
Five GCSE retrieval questions · 16 November 2025 · mathsvault.uk/keystones
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1. Number
Find the total of 182, 135, and 117
Answer: 434 -
2. Algebra
Simplify: 10x - 2x + 10y - 8y
Answer: 8x + 2y -
3. Geometry
Find c if a = 14cm and b = 13cm in a right triangle
Answer: 19.cm -
4. Ratio
Find 53% of 313
Answer: 165.89 -
5. Statistics
Calculate the mean of: 39, 22, 10, 14, 48, 8, 25, 7
Answer: 21.6