Keystones — Lintel
Five GCSE retrieval questions · 1 June 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
72000000
Answer: 7.2 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 28
Answer: (x - 4)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 35cm, angle = 59°. Find adjacent side
Answer: 18cm -
4. Ratio Mixed ratio problems
Express the first part of 4:6 as a fraction in simplest form
Answer: 2⁄5 -
5. Statistics Mean
Calculate the mean of: 34, 30, 47, 45, 25, 33, 14
Answer: 32.6