Keystones — Lintel
Five GCSE retrieval questions · 9 August 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 360,000 in standard form
Answer: 3.6 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 2x - 3
Answer: (x + 1)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 10cm, angle = 48°. Find opposite. Give your answer to 2 decimal places
Answer: 11.11cm -
4. Ratio Mixed ratio problems
Divide 152 in the ratio 2:3:3
Answer: 38, 57 and 57 -
5. Statistics Mean
Calculate the mean of: 33, 24, 29, 20, 50, 12
Answer: 28