Keystones — Lintel
Five GCSE retrieval questions · 29 November 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 63,000 in standard form
Answer: 6.3 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 2x - 24
Answer: (x + 4)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 34cm, angle = 35°. Find adjacent side. Give your answer to 2 decimal places
Answer: 27.85cm -
4. Ratio Mixed ratio problems
Black, white and yellow sweets are in the ratio 4:11:10. What fraction of the sweets are yellow?
Answer: 2⁄5 -
5. Statistics Mean
Calculate the mean of: 32, 32, 23, 25, 33, 36. Give your answer to 2 decimal places
Answer: 30.17