Keystones — Lintel
Five GCSE retrieval questions · 9 February 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 26,000 in standard form
Answer: 2.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x - 8
Answer: (x + 1)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 15cm, angle = 43°. Find opposite. Give your answer to 2 decimal places
Answer: 13.99cm -
4. Ratio Mixed ratio problems
Simplify the ratio kg : 600g
Answer: 5:3 -
5. Statistics Mean
Calculate the mean of: 28, 32, 5, 18, 38, 6. Give your answer to 2 decimal places
Answer: 21.17