Keystones — Lintel
Five GCSE retrieval questions · 27 October 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.0068 in standard form
Answer: 6.8 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 4x - 5
Answer: (x + 1)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 31cm, angle = 40°. Find adjacent side. Give your answer to 2 decimal places
Answer: 23.75cm -
4. Ratio Mixed ratio problems
£222.00 is shared between A and B in the ratio 2:1. How much does A receive?
Answer: £148.00 -
5. Statistics Mean
Calculate the mean of: 33, 38, 11, 22, 38, 38
Answer: 30