Keystones — Lintel
Five GCSE retrieval questions · 22 June 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
26000000
Answer: 2.6 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 12
Answer: (x - 2)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 16cm, angle = 38°. Find opposite
Answer: 12.5cm -
4. Ratio Mixed ratio problems
Express the first part of 5:4 as a fraction in simplest form
Answer: 5⁄9 -
5. Statistics Mean
Calculate the mean of: 48, 16, 27, 31, 21, 41
Answer: 30.7