Keystones — Lintel
Five GCSE retrieval questions · 20 January 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.049
Answer: 4.9 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 28
Answer: (x - 7)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 22cm, angle = 60°. Find adjacent side
Answer: 11cm -
4. Ratio Mixed ratio problems
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 34, 50, 29, 25, 6, 26, 19, 37
Answer: 28.3