Keystones — Lintel
Five GCSE retrieval questions · 11 February 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
100000
Answer: 1 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 30
Answer: (x - 5)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 31°. Find opposite
Answer: 6.6cm -
4. Ratio Mixed ratio problems
Express the first part of 3:2 as a fraction in simplest form
Answer: 3⁄5 -
5. Statistics Mean
Calculate the mean of: 38, 34, 12, 26, 29, 17
Answer: 26