Keystones — Lintel
Five GCSE retrieval questions · 9 July 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
69000
Answer: 6.9 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 42
Answer: (x + 7)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 24cm, angle = 33°. Find adjacent side
Answer: 20.cm -
4. Ratio Mixed ratio problems
Express the first part of 5:2 as a fraction in simplest form
Answer: 5⁄7 -
5. Statistics Mean
Calculate the mean of: 38, 25, 24, 36, 46, 39, 44, 30
Answer: 35.3