Keystones — Lintel
Five GCSE retrieval questions · 31 August 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
830000
Answer: 8.3 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 18
Answer: (x - 3)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 52°. Find opposite
Answer: 28.2cm -
4. Ratio Mixed ratio problems
£280.00 is shared between A and B in the ratio 3:5. How much does A receive?
Answer: £105.00 -
5. Statistics Mean
Calculate the mean of: 45, 37, 35, 15, 18, 15, 32
Answer: 28.1