Keystones — Lintel
Five GCSE retrieval questions · 24 February 2015 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 500,000 in standard form
Answer: 5 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 20x + 96
Answer: (x + 12)(x + 8) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 24cm, angle = 38°. Find opposite. Give your answer to 2 decimal places
Answer: 18.75cm -
4. Ratio Mixed ratio problems
£210.00 is shared between A and B in the ratio 3:4. How much does A receive?
Answer: £90.00 -
5. Statistics Mean
Calculate the mean of: 29, 12, 23, 18, 27, 48. Give your answer to 2 decimal places
Answer: 26.17