Keystones — Lintel
Five GCSE retrieval questions · 8 June 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
600000
Answer: 6 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 8
Answer: (x + 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 19cm, angle = 60°. Find opposite
Answer: 32.9cm -
4. Ratio Mixed ratio problems
£384.00 is shared between A and B in the ratio 3:5. How much does A receive?
Answer: £144.00 -
5. Statistics Mean
The mean of 4 numbers is 40. If 3 of them are 36, 18, 17, what is the missing number?
Answer: 89