Keystones — Lintel
Five GCSE retrieval questions · 14 January 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
220000
Answer: 2.2 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 13x + 42
Answer: (x - 7)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 21cm, angle = 39°. Find opposite
Answer: 17cm -
4. Ratio Mixed ratio problems
£224.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £140.00 -
5. Statistics Mean
Calculate the mean of: 33, 38, 50, 44, 30, 43, 40, 29
Answer: 38.4