Keystones — Lintel
Five GCSE retrieval questions · 20 July 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
7500000
Answer: 7.5 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 32
Answer: (x + 8)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 29cm, angle = 54°. Find opposite
Answer: 39.9cm -
4. Ratio Mixed ratio problems
£216.00 is shared between A and B in the ratio 4:5. How much does A receive?
Answer: £96.00 -
5. Statistics Mean
Calculate the mean of: 5, 35, 41, 23, 39, 17
Answer: 26.7