Keystones — Lintel
Five GCSE retrieval questions · 4 December 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
31000000
Answer: 3.1 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 24
Answer: (x - 6)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 15cm, angle = 48°. Find opposite
Answer: 16.7cm -
4. Ratio Mixed ratio problems
£312.00 is shared between A and B in the ratio 3:5. How much does A receive?
Answer: £117.00 -
5. Statistics Mean
Calculate the mean of: 47, 24, 40, 31, 47, 48, 45
Answer: 40.3