Keystones — Lintel
Five GCSE retrieval questions · 14 November 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
87000000
Answer: 8.7 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 24
Answer: (x - 4)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 16cm, angle = 59°. Find opposite
Answer: 26.6cm -
4. Ratio Mixed ratio problems
Express the first part of 3:4 as a fraction in simplest form
Answer: 3⁄7 -
5. Statistics Mean
Calculate the mean of: 32, 26, 40, 46, 33, 41, 28, 34
Answer: 35