Keystones — Lintel
Five GCSE retrieval questions · 3 April 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
98000000
Answer: 9.8 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + 6x - 16
Answer: (x + 8)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 19cm, angle = 41°. Find adjacent side
Answer: 14.3cm -
4. Ratio Mixed ratio problems
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 36, 5, 38, 40, 36, 27, 21
Answer: 29