Keystones — Lintel
Five GCSE retrieval questions · 4 May 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
41000
Answer: 4.1 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 2)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 37°. Find opposite
Answer: 20.3cm -
4. Ratio Mixed ratio problems
Express the first part of 4:2 as a fraction in simplest form
Answer: 2⁄3 -
5. Statistics Mean
Calculate the mean of: 35, 32, 12, 26, 45, 18, 6
Answer: 24.9