Keystones — Lintel
Five GCSE retrieval questions · 11 September 2013 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.00046 in standard form
Answer: 4.6 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 4x - 60
Answer: (x + 6)(x - 10) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 38cm, angle = 58°. Find adjacent side. Give your answer to 2 decimal places
Answer: 20.14cm -
4. Ratio Mixed ratio problems
Divide 176 in the ratio 4:3:1
Answer: 88, 66 and 22 -
5. Statistics Mean
Calculate the mean of: 32, 50, 36, 32, 13, 18. Give your answer to 2 decimal places
Answer: 30.17