Keystones — Lintel
Five GCSE retrieval questions · 30 December 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 4,000,000 in standard form
Answer: 4 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - x - 30
Answer: (x + 5)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 22cm, angle = 41°. Find adjacent side. Give your answer to 2 decimal places
Answer: 16.6cm -
4. Ratio Mixed ratio problems
Simplify: 10:6:8
Answer: 5:3:4 -
5. Statistics Mean
Calculate the mean of: 11, 45, 16, 34, 47, 33
Answer: 31