Keystones — Lintel
Five GCSE retrieval questions · 2 June 2012 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.0026 in standard form
Answer: 2.6 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x - 18
Answer: (x + 2)(x - 9) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 50°. Find opposite. Give your answer to 2 decimal places
Answer: 32.18cm -
4. Ratio Mixed ratio problems
£294.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £168.00 -
5. Statistics Mean
Calculate the mean of: 14, 9, 15, 7, 22, 44, 9. Give your answer to 2 decimal places
Answer: 17.14