Keystones — Lintel
Five GCSE retrieval questions · 29 July 2013 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 2,300,000 in standard form
Answer: 2.3 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 8x - 48
Answer: (x + 12)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 16cm, angle = 58°. Find adjacent side. Give your answer to 2 decimal places
Answer: 8.48cm -
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: 32, 11, 12, 24, 33, 22, 29, 22. Give your answer to 2 decimal places
Answer: 23.13