Keystones — Lintel
Five GCSE retrieval questions · 31 August 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0002
Answer: 2 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 18
Answer: (x - 6)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 47°. Find opposite
Answer: 11.8cm -
4. Ratio Mixed ratio problems
£322.00 is shared between A and B in the ratio 3:4. How much does A receive?
Answer: £138.00 -
5. Statistics Mean
Calculate the mean of: 26, 44, 22, 8, 47, 19, 22, 21
Answer: 26.1