Keystones — Lintel
Five GCSE retrieval questions · 26 September 2015 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 98,000 in standard form
Answer: 9.8 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 23x + 132
Answer: (x - 11)(x - 12) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 30cm, angle = 62°. Find adjacent side. Give your answer to 2 decimal places
Answer: 14.08cm -
4. Ratio Mixed ratio problems
Simplify: 10:4:10
Answer: 5:2:5 -
5. Statistics Mean
Calculate the mean of: 7, 38, 17, 14, 12, 32, 22, 18
Answer: 20