Keystones — Lintel
Five GCSE retrieval questions · 14 December 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 37,000 in standard form
Answer: 3.7 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - x - 6
Answer: (x + 2)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 36cm, angle = 53°. Find adjacent side. Give your answer to 2 decimal places
Answer: 21.67cm -
4. Ratio Mixed ratio problems
Express the first part of 4:15 as a fraction in simplest form
Answer: 4⁄19 -
5. Statistics Mean
The mean of 5 numbers is 33. If 4 of them are 29, 32, 17, 27, what is the missing number?
Answer: 60