Keystones — Lintel
Five GCSE retrieval questions · 26 April 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00062
Answer: 6.2 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 50°. Find opposite
Answer: 32.2cm -
4. Ratio Mixed ratio problems
£168.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £120.00 -
5. Statistics Mean
Calculate the mean of: 46, 48, 19, 45, 21, 15, 18
Answer: 30.3