Keystones — Lintel
Five GCSE retrieval questions · 17 November 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
6800000
Answer: 6.8 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 26cm, angle = 40°. Find adjacent side
Answer: 19.9cm -
4. Ratio Mixed ratio problems
Express the first part of 3:5 as a fraction in simplest form
Answer: 3⁄8 -
5. Statistics Mean
Calculate the mean of: 13, 20, 37, 37, 6, 31
Answer: 24