Keystones — Lintel
Five GCSE retrieval questions · 11 April 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0005
Answer: 5 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 23cm, angle = 54°. Find opposite
Answer: 31.7cm -
4. Ratio Mixed ratio problems
£168.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £48.00 -
5. Statistics Mean
Calculate the mean of: 18, 36, 34, 32, 13, 34
Answer: 27.8