Keystones — Lintel
Five GCSE retrieval questions · 2 October 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.0002 in standard form
Answer: 2 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 12x + 11
Answer: (x + 11)(x + 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 12cm, angle = 57°. Find opposite. Give your answer to 2 decimal places
Answer: 18.48cm -
4. Ratio Mixed ratio problems
£294.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £210.00 -
5. Statistics Mean
Calculate the mean of: 46, 44, 25, 36, 7, 5. Give your answer to 2 decimal places
Answer: 27.17