Keystones — Lintel
Five GCSE retrieval questions · 26 June 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 7,300,000 in standard form
Answer: 7.3 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 2x - 24
Answer: (x + 4)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 17cm, angle = 53°. Find opposite. Give your answer to 2 decimal places
Answer: 22.56cm -
4. Ratio Mixed ratio problems
£224.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £140.00 -
5. Statistics Mean
The mean of 4 numbers is 30. If 3 of them are 23, 37, 26, what is the missing number?
Answer: 34