Keystones — Lintel
Five GCSE retrieval questions · 14 July 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.056
Answer: 5.6 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 12
Answer: (x - 3)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 39cm, angle = 65°. Find adjacent side
Answer: 16.5cm -
4. Ratio Mixed ratio problems
£294.00 is shared between A and B in the ratio 2:1. How much does A receive?
Answer: £196.00 -
5. Statistics Mean
Calculate the mean of: 33, 25, 36, 14, 15, 14, 6
Answer: 20.4