Keystones — Lintel
Five GCSE retrieval questions · 11 March 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
1500000
Answer: 1.5 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 14
Answer: (x + 7)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 17cm, angle = 53°. Find adjacent side
Answer: 10.2cm -
4. Ratio Mixed ratio problems
Express the first part of 4:2 as a fraction in simplest form
Answer: 2⁄3 -
5. Statistics Mean
Calculate the mean of: 12, 47, 34, 11, 43, 46, 33, 43
Answer: 33.6