Keystones — Lintel
Five GCSE retrieval questions · 31 July 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
1200000
Answer: 1.2 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 13x + 42
Answer: (x - 6)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 17cm, angle = 46°. Find adjacent side
Answer: 11.8cm -
4. Ratio Mixed ratio problems
Divide 144 in the ratio 2:1:1
Answer: 72, 36 and 36 -
5. Statistics Mean
Calculate the mean of: 30, 19, 34, 49, 19, 10, 24, 13
Answer: 24.8