Keystones — Lintel
Five GCSE retrieval questions · 27 April 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.000045 in standard form
Answer: 4.5 × 10-5 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 9
Answer: (x - 3)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 20cm, angle = 31°. Find opposite. Give your answer to 2 decimal places
Answer: 12.02cm -
4. Ratio Mixed ratio problems
£294.00 is shared between A and B in the ratio 2:1. How much does A receive?
Answer: £196.00 -
5. Statistics Mean
Calculate the mean of: 13, 18, 6, 44, 41, 22, 21. Give your answer to 2 decimal places
Answer: 23.57