Keystones — Lintel
Five GCSE retrieval questions · 14 February 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
73000
Answer: 7.3 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 15
Answer: (x + 5)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 37cm, angle = 41°. Find adjacent side
Answer: 27.9cm -
4. Ratio Mixed ratio problems
Express the first part of 4:3 as a fraction in simplest form
Answer: 4⁄7 -
5. Statistics Mean
Calculate the mean of: 16, 27, 50, 23, 36, 14, 33
Answer: 28.4