Keystones — Lintel
Five GCSE retrieval questions · 6 December 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.000091 in standard form
Answer: 9.1 × 10-5 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x - 16
Answer: (x + 2)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 32cm, angle = 46°. Find adjacent side. Give your answer to 2 decimal places
Answer: 22.23cm -
4. Ratio Mixed ratio problems
£210.00 is shared between A and B in the ratio 2:3. How much does A receive?
Answer: £84.00 -
5. Statistics Mean
Calculate the mean of: 10, 41, 6, 35, 45, 46
Answer: 30.5