Keystones — Lintel
Five GCSE retrieval questions · 5 July 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
30000
Answer: 3 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 12
Answer: (x + 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 18cm, angle = 34°. Find opposite
Answer: 12.cm -
4. Ratio Mixed ratio problems
Express the first part of 2:3 as a fraction in simplest form
Answer: 2⁄5 -
5. Statistics Mean
Calculate the mean of: 34, 46, 45, 39, 40, 35, 49, 31
Answer: 39.9