Keystones — Lintel
Five GCSE retrieval questions · 2 October 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
4400000
Answer: 4.4 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 20
Answer: (x - 4)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 34°. Find opposite
Answer: 18.2cm -
4. Ratio Mixed ratio problems
Express the first part of 3:6 as a fraction in simplest form
Answer: 1⁄3 -
5. Statistics Mean
Calculate the mean of: 40, 43, 17, 25, 33, 16, 26
Answer: 28.6