Keystones — Lintel
Five GCSE retrieval questions · 11 August 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
67000000
Answer: 6.7 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 24
Answer: (x - 4)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 20cm, angle = 60°. Find opposite
Answer: 34.6cm -
4. Ratio Mixed ratio problems
£288.00 is shared between A and B in the ratio 1:2. How much does A receive?
Answer: £96.00 -
5. Statistics Mean
The mean of 5 numbers is 35. If 4 of them are 35, 28, 41, 36, what is the missing number?
Answer: 35