Keystones — Lintel
Five GCSE retrieval questions · 1 February 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
79000
Answer: 7.9 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 8
Answer: (x + 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 32cm, angle = 37°. Find adjacent side
Answer: 25.6cm -
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: 26, 14, 12, 38, 30, 9, 14, 19
Answer: 20.3