Keystones — Lintel
Five GCSE retrieval questions · 24 September 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 900,000 in standard form
Answer: 9 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 40
Answer: (x + 8)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 14cm, angle = 39°. Find opposite. Give your answer to 2 decimal places
Answer: 11.34cm -
4. Ratio Mixed ratio problems
£279.00 is shared between A and B in the ratio 4:5. How much does A receive?
Answer: £124.00 -
5. Statistics Mean
Calculate the mean of: 46, 8, 49, 12, 42, 20, 22. Give your answer to 2 decimal places
Answer: 28.43