Keystones — Lintel
Five GCSE retrieval questions · 7 June 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 86,000 in standard form
Answer: 8.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 14
Answer: (x + 7)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 32cm, angle = 57°. Find adjacent side. Give your answer to 2 decimal places
Answer: 17.43cm -
4. Ratio Mixed ratio problems
£333.00 is shared between A and B in the ratio 4:5. How much does A receive?
Answer: £148.00 -
5. Statistics Mean
The mean of 4 numbers is 31. If 3 of them are 50, 30, 19, what is the missing number?
Answer: 25