Keystones — Lintel
Five GCSE retrieval questions · 22 August 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.000088 in standard form
Answer: 8.8 × 10-5 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x - 8
Answer: (x + 1)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 27cm, angle = 33°. Find adjacent side. Give your answer to 2 decimal places
Answer: 22.64cm -
4. Ratio Mixed ratio problems
£198.00 is shared between A and B in the ratio 1:2. How much does A receive?
Answer: £66.00 -
5. Statistics Mean
Calculate the mean of: 22, 41, 32, 16, 26, 40
Answer: 29.5