Keystones — Lintel
Five GCSE retrieval questions · 31 January 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 96,000 in standard form
Answer: 9.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 9x + 8
Answer: (x + 8)(x + 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 53°. Find opposite. Give your answer to 2 decimal places
Answer: 35.83cm -
4. Ratio Mixed ratio problems
£351.00 is shared between A and B in the ratio 5:4. How much does A receive?
Answer: £195.00 -
5. Statistics Mean
The mean of 6 numbers is 27. If 5 of them are 26, 44, 21, 25, 18, what is the missing number?
Answer: 28