Keystones — Lintel
Five GCSE retrieval questions · 25 February 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 940,000 in standard form
Answer: 9.4 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 2x - 24
Answer: (x + 4)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 27cm, angle = 35°. Find adjacent side. Give your answer to 2 decimal places
Answer: 22.12cm -
4. Ratio Mixed ratio problems
Black and white sweets are in the ratio 8:10. What fraction of the sweets are white?
Answer: 5⁄9 -
5. Statistics Mean
Calculate the mean of: 18, 37, 14, 48, 10, 10, 50, 49
Answer: 29.5