Keystones — Lintel
Five GCSE retrieval questions · 16 May 2011 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 35,000 in standard form
Answer: 3.5 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 15x + 50
Answer: (x - 5)(x - 10) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 32cm, angle = 58°. Find adjacent side. Give your answer to 2 decimal places
Answer: 16.96cm -
4. Ratio Mixed ratio problems
Simplify the ratio 1 litre : 600 ml
Answer: 5:3 -
5. Statistics Mean
Calculate the mean of: 46, 10, 32, 45, 34, 43, 22, 48
Answer: 35