Keystones — Lintel
Five GCSE retrieval questions · 1 February 2016 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 67,000,000 in standard form
Answer: 6.7 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + 6x - 40
Answer: (x + 10)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 39cm, angle = 53°. Find adjacent side. Give your answer to 2 decimal places
Answer: 23.47cm -
4. Ratio Mixed ratio problems
£350.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £200.00 -
5. Statistics Mean
Calculate the mean of: 33, 5, 29, 26, 50, 31, 50
Answer: 32