Keystones — Lintel
Five GCSE retrieval questions · 16 April 2011 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 37,000 in standard form
Answer: 3.7 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - x - 12
Answer: (x + 3)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 30cm, angle = 42°. Find adjacent side. Give your answer to 2 decimal places
Answer: 22.29cm -
4. Ratio Mixed ratio problems
Simplify: 4:8:8
Answer: 1:2:2 -
5. Statistics Mean
Calculate the mean of: 31, 35, 35, 44, 10, 13, 7
Answer: 25