Keystones — Lintel
Five GCSE retrieval questions · 10 May 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 360,000 in standard form
Answer: 3.6 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 11x + 10
Answer: (x + 10)(x + 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 16cm, angle = 43°. Find opposite. Give your answer to 2 decimal places
Answer: 14.92cm -
4. Ratio Mixed ratio problems
Divide 66 in the ratio 3:2:1
Answer: 33, 22 and 11 -
5. Statistics Mean
Calculate the mean of: 40, 11, 26, 18, 34, 41. Give your answer to 2 decimal places
Answer: 28.33