Keystones — Lintel
Five GCSE retrieval questions · 9 September 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 480,000 in standard form
Answer: 4.8 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 88
Answer: (x + 11)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 10cm, angle = 38°. Find opposite. Give your answer to 2 decimal places
Answer: 7.81cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2 litres : 700 ml
Answer: 20:7 -
5. Statistics Mean
Calculate the mean of: 26, 8, 27, 9, 25, 10
Answer: 17.5