Keystones — Lintel
Five GCSE retrieval questions · 27 June 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.000033 in standard form
Answer: 3.3 × 10-5 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 20
Answer: (x + 5)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 28cm, angle = 53°. Find adjacent side. Give your answer to 2 decimal places
Answer: 16.85cm -
4. Ratio Mixed ratio problems
£224.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £140.00 -
5. Statistics Mean
Calculate the mean of: 45, 38, 18, 10, 34, 13. Give your answer to 2 decimal places
Answer: 26.33