Keystones — Lintel
Five GCSE retrieval questions · 14 May 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
44000
Answer: 4.4 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 8
Answer: (x - 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 32cm, angle = 55°. Find adjacent side
Answer: 18.4cm -
4. Ratio Mixed ratio problems
Express the first part of 3:5 as a fraction in simplest form
Answer: 3⁄8 -
5. Statistics Mean
The mean of 4 numbers is 32. If 3 of them are 30, 26, 49, what is the missing number?
Answer: 23