Keystones — Lintel
Five GCSE retrieval questions · 2 April 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 1⁄5 + 1⁄4 + 5⁄6
Answer: 77⁄60 -
2. Algebra
Factorise: 2x² + 7x
Answer: x(2x + 7) -
3. Geometry
Find the perimeter: hypotenuse = 18cm, one side = 14cm
Answer: 43.3cm -
4. Ratio
Calculate 36.7% of 452
Answer: 165.88 -
5. Statistics
Find the range of: 11, 13, 25, -29, -22
Answer: 54