Keystones — Lintel
Five GCSE retrieval questions · 8 January 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 71,000 in standard form
Answer: 7.1 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x + 4
Answer: (x + 4)(x + 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 33cm, angle = 60°. Find adjacent side
Answer: 16.5cm -
4. Ratio Mixed ratio problems
£200.00 is shared between A and B in the ratio 3:5. How much does A receive?
Answer: £75.00 -
5. Statistics Mean
Calculate the mean of: 13, 32, 50, 43, 42, 5, 44. Give your answer to 2 decimal places
Answer: 32.71