Keystones — Lintel
Five GCSE retrieval questions · 19 January 2023 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.096
Answer: 9.6 × 10^-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 10
Answer: (x - 2)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 28cm, angle = 37°. Find adjacent side
Answer: 22.4cm -
4. Ratio Mixed ratio problems
Simplify: 12:12:6
Answer: 2:2:1 -
5. Statistics Mean
Calculate the mean of: 7, 20, 25, 7, 36, 37, 37, 36
Answer: 25.6