Keystones — Lintel
Five GCSE retrieval questions · 23 June 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 73,000 in standard form
Answer: 7.3 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 32
Answer: (x + 8)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 35cm, angle = 49°. Find adjacent side. Give your answer to 2 decimal places
Answer: 22.96cm -
4. Ratio Mixed ratio problems
Simplify the ratio £4 : 75p
Answer: 16:3 -
5. Statistics Mean
Calculate the mean of: 14, 33, 18, 7, 11, 31, 6. Give your answer to 2 decimal places
Answer: 17.14