Keystones — Lintel
Five GCSE retrieval questions · 30 May 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00065
Answer: 6.5 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 8
Answer: (x - 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 38cm, angle = 59°. Find adjacent side
Answer: 19.6cm -
4. Ratio Mixed ratio problems
Express the first part of 5:3 as a fraction in simplest form
Answer: 5⁄8 -
5. Statistics Mean
Calculate the mean of: 32, 14, 38, 23, 20, 28
Answer: 25.8