Keystones — Lintel
Five GCSE retrieval questions · 10 April 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
66000000
Answer: 6.6 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 42
Answer: (x + 7)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 16cm, angle = 49°. Find opposite
Answer: 18.4cm -
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: 21, 27, 34, 46, 45, 12, 48, 42
Answer: 34.4