Keystones — Lintel
Five GCSE retrieval questions · 29 October 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.004
Answer: 4 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 30
Answer: (x - 5)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 26cm, angle = 55°. Find adjacent side
Answer: 14.9cm -
4. Ratio Mixed ratio problems
Express the first part of 6:3 as a fraction in simplest form
Answer: 2⁄3 -
5. Statistics Mean
Calculate the mean of: 8, 45, 6, 24, 10, 19
Answer: 18.7