Keystones — Lintel
Five GCSE retrieval questions · 23 December 2016 · 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 - 18x + 72
Answer: (x - 6)(x - 12) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 17cm, angle = 50°. Find opposite. Give your answer to 2 decimal places
Answer: 20.26cm -
4. Ratio Mixed ratio problems
£198.00 is shared between A and B in the ratio 4:5. How much does A receive?
Answer: £88.00 -
5. Statistics Mean
Calculate the mean of: 18, 29, 44, 11, 32, 20. Give your answer to 2 decimal places
Answer: 25.67