Keystones — Lintel
Five GCSE retrieval questions · 9 May 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.0083 in standard form
Answer: 8.3 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 11x + 30
Answer: (x + 6)(x + 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 35cm, angle = 49°. Find adjacent side. Give your answer to 2 decimal places
Answer: 22.96cm -
4. Ratio Mixed ratio problems
Simplify: 16:12:8
Answer: 4:3:2 -
5. Statistics Mean
Calculate the mean of: 36, 22, 27, 45, 27, 23
Answer: 30