Keystones — Lintel
Five GCSE retrieval questions · 11 June 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.091
Answer: 9.1 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 18
Answer: (x - 6)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 17cm, angle = 46°. Find adjacent side
Answer: 11.8cm -
4. Ratio Mixed ratio problems
£287.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £164.00 -
5. Statistics Mean
Calculate the mean of: 40, 50, 20, 30, 5, 48
Answer: 32.2