Keystones — Lintel
Five GCSE retrieval questions · 9 June 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.053 in standard form
Answer: 5.3 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 17x + 72
Answer: (x - 8)(x - 9) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 30cm, angle = 35°. Find opposite. Give your answer to 2 decimal places
Answer: 21.01cm -
4. Ratio Mixed ratio problems
£185.00 is shared between A and B in the ratio 3:2. How much does A receive?
Answer: £111.00 -
5. Statistics Mean
Calculate the mean of: 32, 32, 7, 18, 35, 12, 38, 32
Answer: 25.75