Keystones — Lintel
Five GCSE retrieval questions · 7 November 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.00094 in standard form
Answer: 9.4 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 17x + 60
Answer: (x - 5)(x - 12) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 30cm, angle = 45°. Find opposite
Answer: 30cm -
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: 44, 10, 15, 11, 31, 15, 25, 34. Give your answer to 2 decimal places
Answer: 23.13