Keystones — Lintel
Five GCSE retrieval questions · 10 July 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
33000
Answer: 3.3 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 14
Answer: (x + 7)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 36°. Find opposite
Answer: 19.6cm -
4. Ratio Mixed ratio problems
Express the first part of 6:5 as a fraction in simplest form
Answer: 6⁄11 -
5. Statistics Mean
Calculate the mean of: 20, 21, 35, 26, 37, 49
Answer: 31.3