Keystones — Lintel
Five GCSE retrieval questions · 1 June 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
870000
Answer: 8.7 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 14
Answer: (x - 2)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 20cm, angle = 59°. Find adjacent side
Answer: 10.3cm -
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 5 numbers is 32. If 4 of them are 18, 44, 36, 27, what is the missing number?
Answer: 35