Keystones — Lintel
Five GCSE retrieval questions · 1 October 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 780,000 in standard form
Answer: 7.8 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 14
Answer: (x + 7)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 37cm, angle = 54°. Find adjacent side. Give your answer to 2 decimal places
Answer: 21.75cm -
4. Ratio Mixed ratio problems
£296.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £185.00 -
5. Statistics Mean
Calculate the mean of: 47, 28, 41, 5, 27, 22, 37. Give your answer to 2 decimal places
Answer: 29.57