Keystones — Lintel
Five GCSE retrieval questions · 22 September 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
63000000
Answer: 6.3 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 18
Answer: (x - 3)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 23cm, angle = 55°. Find adjacent side
Answer: 13.2cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 26, 42, 17, 18, 6, 8, 8, 32
Answer: 19.6