Keystones — Lintel
Five GCSE retrieval questions · 26 March 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
230000
Answer: 2.3 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 14x + 49
Answer: (x - 7)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 25cm, angle = 49°. Find opposite
Answer: 28.8cm -
4. Ratio Mixed ratio problems
£222.00 is shared between A and B in the ratio 1:2. How much does A receive?
Answer: £74.00 -
5. Statistics Mean
Calculate the mean of: 27, 29, 39, 37, 29, 39
Answer: 33.3