Keystones — Lintel
Five GCSE retrieval questions · 25 May 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
63000
Answer: 6.3 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 14
Answer: (x - 2)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 38cm, angle = 62°. Find adjacent side
Answer: 17.8cm -
4. Ratio Mixed ratio problems
Express the first part of 6:2 as a fraction in simplest form
Answer: 3⁄4 -
5. Statistics Mean
The mean of 4 numbers is 27. If 3 of them are 44, 15, 28, what is the missing number?
Answer: 21