Keystones — Lintel
Five GCSE retrieval questions · 26 March 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0026
Answer: 2.6 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 13x + 42
Answer: (x - 6)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 58°. Find opposite
Answer: 43.2cm -
4. Ratio Mixed ratio problems
£217.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £62.00 -
5. Statistics Mean
Calculate the mean of: 32, 30, 7, 8, 44, 20, 35
Answer: 25.1