Keystones — Lintel
Five GCSE retrieval questions · 12 July 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
730000
Answer: 7.3 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 20cm, angle = 59°. Find opposite
Answer: 33.3cm -
4. Ratio Mixed ratio problems
Divide 176 in the ratio 3:2:3
Answer: 66, 44 and 66 -
5. Statistics Mean
Calculate the mean of: 9, 40, 44, 49, 27, 9, 17
Answer: 27.9