Keystones — Lintel
Five GCSE retrieval questions · 9 April 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.0064 in standard form
Answer: 6.4 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - x - 56
Answer: (x + 7)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 15cm, angle = 37°. Find adjacent side. Give your answer to 2 decimal places
Answer: 11.98cm -
4. Ratio Mixed ratio problems
In ratio 11:3:8, what fraction is the second part?
Answer: 3⁄22 -
5. Statistics Mean
Calculate the mean of: 37, 41, 41, 37, 12, 34. Give your answer to 2 decimal places
Answer: 33.67