Keystones — Lintel
Five GCSE retrieval questions · 22 January 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 85,000 in standard form
Answer: 8.5 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 9x - 10
Answer: (x + 10)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 17cm, angle = 56°. Find opposite. Give your answer to 2 decimal places
Answer: 25.2cm -
4. Ratio Mixed ratio problems
£180.00 is shared between A and B in the ratio 3:2. How much does A receive?
Answer: £108.00 -
5. Statistics Mean
Calculate the mean of: 40, 38, 34, 10, 12, 27. Give your answer to 2 decimal places
Answer: 26.83