Keystones — Lintel
Five GCSE retrieval questions · 15 July 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00048
Answer: 4.8 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 18
Answer: (x - 6)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 16cm, angle = 35°. Find adjacent side
Answer: 13.cm -
4. Ratio Mixed ratio problems
Divide 200 in the ratio 3:3:2
Answer: 75, 75 and 50 -
5. Statistics Mean
Calculate the mean of: 35, 26, 43, 10, 32, 46
Answer: 32