Keystones — Lintel
Five GCSE retrieval questions · 7 December 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.0067 in standard form
Answer: 6.7 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 2)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 19cm, angle = 61°. Find adjacent side. Give your answer to 2 decimal places
Answer: 9.21cm -
4. Ratio Mixed ratio problems
Simplify: 24:16:20
Answer: 6:4:5 -
5. Statistics Mean
Calculate the mean of: 40, 6, 19, 40, 29, 43
Answer: 29.5