Keystones — Lintel
Five GCSE retrieval questions · 14 October 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
76000
Answer: 7.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 14x + 49
Answer: (x - 7)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 37cm, angle = 65°. Find adjacent side
Answer: 15.6cm -
4. Ratio Mixed ratio problems
Express the first part of 2:5 as a fraction in simplest form
Answer: 2⁄7 -
5. Statistics Mean
Calculate the mean of: 39, 11, 34, 50, 40, 49, 20, 50
Answer: 36.6