Keystones — Lintel
Five GCSE retrieval questions · 19 June 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.0024 in standard form
Answer: 2.4 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 18cm, angle = 57°. Find opposite. Give your answer to 2 decimal places
Answer: 27.72cm -
4. Ratio Mixed ratio problems
Simplify: 16:20:24
Answer: 4:5:6 -
5. Statistics Mean
Calculate the mean of: 8, 22, 26, 24, 37, 16, 25, 26
Answer: 23