Keystones — Lintel
Five GCSE retrieval questions · 3 March 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 26,000 in standard form
Answer: 2.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 2x - 48
Answer: (x + 6)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 20cm, angle = 30°. Find opposite. Give your answer to 2 decimal places
Answer: 11.55cm -
4. Ratio Mixed ratio problems
£120.00 is shared between A and B in the ratio 3:2. How much does A receive?
Answer: £72.00 -
5. Statistics Mean
Calculate the mean of: 10, 7, 26, 15, 15, 6, 26, 36. Give your answer to 2 decimal places
Answer: 17.63