Keystones — Lintel
Five GCSE retrieval questions · 30 October 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 65,000 in standard form
Answer: 6.5 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x - 22
Answer: (x + 2)(x - 11) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 16cm, angle = 50°. Find adjacent side. Give your answer to 2 decimal places
Answer: 10.28cm -
4. Ratio Mixed ratio problems
£264.00 is shared between A and B in the ratio 3:5. How much does A receive?
Answer: £99.00 -
5. Statistics Mean
The mean of 6 numbers is 28. If 5 of them are 24, 24, 48, 50, 16, what is the missing number?
Answer: 6