Keystones — Lintel
Five GCSE retrieval questions · 13 June 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.068
Answer: 6.8 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 12
Answer: (x - 3)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 17cm, angle = 36°. Find opposite
Answer: 12.4cm -
4. Ratio Mixed ratio problems
Express the first part of 4:5 as a fraction in simplest form
Answer: 4⁄9 -
5. Statistics Mean
Calculate the mean of: 35, 20, 19, 12, 40, 14
Answer: 23.3