Keystones — Lintel
Five GCSE retrieval questions · 5 May 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 3,700,000 in standard form
Answer: 3.7 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 24
Answer: (x - 3)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 36cm, angle = 41°. Find adjacent side. Give your answer to 2 decimal places
Answer: 27.17cm -
4. Ratio Mixed ratio problems
£203.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £145.00 -
5. Statistics Mean
The mean of 6 numbers is 33. If 5 of them are 37, 39, 20, 19, 25, what is the missing number?
Answer: 58