Keystones — Lintel
Five GCSE retrieval questions · 3 June 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.00017 in standard form
Answer: 1.7 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 10cm, angle = 33°. Find opposite. Give your answer to 2 decimal places
Answer: 6.49cm -
4. Ratio Mixed ratio problems
Simplify: 18:18:6
Answer: 3:3:1 -
5. Statistics Mean
Calculate the mean of: 18, 15, 41, 29, 13, 46, 22, 9. Give your answer to 2 decimal places
Answer: 24.13