Keystones — Lintel
Five GCSE retrieval questions · 9 February 2013 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 68,000 in standard form
Answer: 6.8 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 14x + 45
Answer: (x + 9)(x + 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 51°. Find opposite. Give your answer to 2 decimal places
Answer: 13.58cm -
4. Ratio Mixed ratio problems
£350.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £100.00 -
5. Statistics Mean
Calculate the mean of: 39, 32, 6, 5, 29, 44, 6
Answer: 23