Keystones — Lintel
Five GCSE retrieval questions · 8 April 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 62,000,000 in standard form
Answer: 6.2 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 15x + 56
Answer: (x - 7)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 33cm, angle = 36°. Find adjacent side. Give your answer to 2 decimal places
Answer: 26.7cm -
4. Ratio Mixed ratio problems
Simplify: 8:16:12
Answer: 2:4:3 -
5. Statistics Mean
Calculate the mean of: 11, 49, 6, 23, 39, 36. Give your answer to 2 decimal places
Answer: 27.33