Keystones — Lintel
Five GCSE retrieval questions · 28 February 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 - 5x - 6
Answer: (x + 1)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 25cm, angle = 57°. Find adjacent side. Give your answer to 2 decimal places
Answer: 13.62cm -
4. Ratio Mixed ratio problems
£414.00 is shared between A and B in the ratio 4:5. How much does A receive?
Answer: £184.00 -
5. Statistics Mean
Calculate the mean of: 38, 25, 30, 46, 24, 34, 5, 32
Answer: 29.25