Keystones — Lintel
Five GCSE retrieval questions · 6 September 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 180,000 in standard form
Answer: 1.8 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 110
Answer: (x + 11)(x - 10) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 28cm, angle = 50°. Find opposite. Give your answer to 2 decimal places
Answer: 33.37cm -
4. Ratio Mixed ratio problems
£252.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £72.00 -
5. Statistics Mean
Calculate the mean of: 14, 39, 45, 43, 7, 6, 22. Give your answer to 2 decimal places
Answer: 25.14