Keystones — Lintel
Five GCSE retrieval questions · 20 May 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
770000
Answer: 7.7 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 10
Answer: (x - 2)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 38cm, angle = 52°. Find adjacent side
Answer: 23.4cm -
4. Ratio Mixed ratio problems
£336.00 is shared between A and B in the ratio 3:5. How much does A receive?
Answer: £126.00 -
5. Statistics Mean
Calculate the mean of: 25, 35, 28, 42, 38, 41, 38, 17
Answer: 33