Keystones — Lintel
Five GCSE retrieval questions · 16 July 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.00094 in standard form
Answer: 9.4 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 35
Answer: (x - 5)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 32°. Find opposite. Give your answer to 2 decimal places
Answer: 13.75cm -
4. Ratio Mixed ratio problems
£351.00 is shared between A and B in the ratio 5:4. How much does A receive?
Answer: £195.00 -
5. Statistics Mean
Calculate the mean of: 47, 17, 10, 17, 41, 48, 46. Give your answer to 2 decimal places
Answer: 32.29