Keystones — Lintel
Five GCSE retrieval questions · 25 December 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 8,000,000 in standard form
Answer: 8 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 56
Answer: (x + 8)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 19cm, angle = 35°. Find adjacent side. Give your answer to 2 decimal places
Answer: 15.56cm -
4. Ratio Mixed ratio problems
Simplify: 16:24:16
Answer: 2:3:2 -
5. Statistics Mean
Calculate the mean of: 7, 41, 48, 30, 16, 27, 17, 18
Answer: 25.5