Keystones — Lintel
Five GCSE retrieval questions · 16 December 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
7500000
Answer: 7.5 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 10
Answer: (x - 2)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 34cm, angle = 37°. Find adjacent side
Answer: 27.2cm -
4. Ratio Mixed ratio problems
In ratio 3:3:1, what fraction is the second part?
Answer: 3⁄7 -
5. Statistics Mean
The mean of 5 numbers is 29. If 4 of them are 44, 15, 46, 30, what is the missing number?
Answer: 10