Keystones — Lintel
Five GCSE retrieval questions · 7 August 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
270000
Answer: 2.7 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 12
Answer: (x - 2)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 19cm, angle = 48°. Find opposite
Answer: 21.cm -
4. Ratio Mixed ratio problems
Express the first part of 5:6 as a fraction in simplest form
Answer: 5⁄11 -
5. Statistics Mean
Calculate the mean of: 48, 50, 15, 27, 40, 21, 17, 7
Answer: 28.1