Keystones — Lintel
Five GCSE retrieval questions · 24 December 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
1900000
Answer: 1.9 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 2)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 18cm, angle = 39°. Find adjacent side
Answer: 14cm -
4. Ratio Mixed ratio problems
Express the first part of 6:4 as a fraction in simplest form
Answer: 3⁄5 -
5. Statistics Mean
The mean of 4 numbers is 36. If 3 of them are 44, 31, 19, what is the missing number?
Answer: 50