Keystones — Lintel
Five GCSE retrieval questions · 26 September 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
630000
Answer: 6.3 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 21
Answer: (x - 7)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 35cm, angle = 48°. Find adjacent side
Answer: 23.4cm -
4. Ratio Mixed ratio problems
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 26, 42, 34, 48, 38, 10, 13
Answer: 30.1