Keystones — Lintel
Five GCSE retrieval questions · 12 January 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.098
Answer: 9.8 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 20
Answer: (x - 4)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 20cm, angle = 41°. Find opposite
Answer: 17.4cm -
4. Ratio Mixed ratio problems
£252.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £144.00 -
5. Statistics Mean
Calculate the mean of: 37, 12, 39, 19, 10, 33, 6
Answer: 22.3