Keystones — Lintel
Five GCSE retrieval questions · 24 December 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 52,000,000 in standard form
Answer: 5.2 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x + 2
Answer: (x + 2)(x + 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 18cm, angle = 51°. Find adjacent side. Give your answer to 2 decimal places
Answer: 11.33cm -
4. Ratio Mixed ratio problems
£273.00 is shared between A and B in the ratio 3:4. How much does A receive?
Answer: £117.00 -
5. Statistics Mean
Calculate the mean of: 24, 49, 50, 7, 26, 26. Give your answer to 2 decimal places
Answer: 30.33