Keystones — Lintel
Five GCSE retrieval questions · 23 February 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.066
Answer: 6.6 × 10^-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 12
Answer: (x - 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 24cm, angle = 43°. Find adjacent side
Answer: 17.6cm -
4. Ratio Mixed ratio problems
Simplify: 24:20:8
Answer: 6:5:2 -
5. Statistics Mean
Calculate the mean of: 43, 8, 33, 13, 33, 12, 10, 46
Answer: 24.8