Keystones — Lintel
Five GCSE retrieval questions · 21 August 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 9,000,000 in standard form
Answer: 9 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 26cm, angle = 36°. Find opposite. Give your answer to 2 decimal places
Answer: 18.89cm -
4. Ratio Mixed ratio problems
In ratio 5:4:8, what fraction is the first part?
Answer: 5⁄17 -
5. Statistics Mean
Calculate the mean of: 13, 20, 29, 13, 12, 26. Give your answer to 2 decimal places
Answer: 18.83