Keystones — Lintel
Five GCSE retrieval questions · 27 May 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
34000
Answer: 3.4 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 5
Answer: (x + 5)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 20cm, angle = 30°. Find adjacent side
Answer: 17.3cm -
4. Ratio Mixed ratio problems
Express the first part of 5:4 as a fraction in simplest form
Answer: 5⁄9 -
5. Statistics Mean
Calculate the mean of: 22, 36, 23, 35, 35, 26, 45
Answer: 31.7