Keystones — Lintel
Five GCSE retrieval questions · 6 May 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.086 in standard form
Answer: 8.6 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 16cm, angle = 62°. Find adjacent side. Give your answer to 2 decimal places
Answer: 7.51cm -
4. Ratio Mixed ratio problems
Express the first part of 7:10 as a fraction in simplest form
Answer: 7⁄17 -
5. Statistics Mean
Calculate the mean of: 36, 29, 10, 22, 45, 22. Give your answer to 2 decimal places
Answer: 27.33