Keystones — Lintel
Five GCSE retrieval questions · 5 May 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
90000000
Answer: 9 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 35
Answer: (x - 7)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 15cm, angle = 36°. Find opposite
Answer: 10.9cm -
4. Ratio Mixed ratio problems
£252.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £72.00 -
5. Statistics Mean
Calculate the mean of: 8, 37, 9, 7, 31, 36
Answer: 21.3