Keystones — Lintel
Five GCSE retrieval questions · 30 January 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.065 in standard form
Answer: 6.5 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 60
Answer: (x + 10)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 17cm, angle = 45°. Find opposite
Answer: 17cm -
4. Ratio Mixed ratio problems
£252.00 is shared between A and B in the ratio 3:4. How much does A receive?
Answer: £108.00 -
5. Statistics Mean
Calculate the mean of: 13, 23, 17, 27, 8, 24. Give your answer to 2 decimal places
Answer: 18.67