Keystones — Lintel
Five GCSE retrieval questions · 26 January 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.000048 in standard form
Answer: 4.8 × 10-5 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x - 16
Answer: (x + 2)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 15cm, angle = 29°. Find adjacent side. Give your answer to 2 decimal places
Answer: 13.12cm -
4. Ratio Mixed ratio problems
£350.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £100.00 -
5. Statistics Mean
Calculate the mean of: 31, 10, 32, 43, 9, 40
Answer: 27.5