Keystones — Lintel
Five GCSE retrieval questions · 8 April 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.085
Answer: 8.5 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 20
Answer: (x + 5)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 34cm, angle = 30°. Find adjacent side
Answer: 29.4cm -
4. Ratio Mixed ratio problems
£174.00 is shared between A and B in the ratio 2:1. How much does A receive?
Answer: £116.00 -
5. Statistics Mean
Calculate the mean of: 44, 41, 48, 28, 24, 44
Answer: 38.2