Keystones — Lintel
Five GCSE retrieval questions · 21 June 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.097
Answer: 9.7 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 24
Answer: (x + 8)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 27cm, angle = 32°. Find adjacent side
Answer: 22.9cm -
4. Ratio Mixed ratio problems
Express the first part of 6:2 as a fraction in simplest form
Answer: 3⁄4 -
5. Statistics Mean
Calculate the mean of: 14, 32, 14, 15, 14, 13, 8, 13
Answer: 15.4