Keystones — Lintel
Five GCSE retrieval questions · 22 June 2015 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 960,000 in standard form
Answer: 9.6 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 14x + 33
Answer: (x - 3)(x - 11) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 30cm, angle = 57°. Find opposite. Give your answer to 2 decimal places
Answer: 46.2cm -
4. Ratio Mixed ratio problems
£273.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £156.00 -
5. Statistics Mean
The mean of 4 numbers is 32. If 3 of them are 16, 23, 22, what is the missing number?
Answer: 67