Keystones — Lintel
Five GCSE retrieval questions · 19 April 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0031
Answer: 3.1 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 36
Answer: (x - 6)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 26cm, angle = 25°. Find adjacent side
Answer: 23.6cm -
4. Ratio Mixed ratio problems
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 10, 13, 31, 8, 7, 38, 29, 8
Answer: 18