Keystones — Lintel
Five GCSE retrieval questions · 28 March 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
710000
Answer: 7.1 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 40
Answer: (x + 8)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 26cm, angle = 41°. Find adjacent side
Answer: 19.6cm -
4. Ratio Mixed ratio problems
£238.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £68.00 -
5. Statistics Mean
The mean of 6 numbers is 35. If 5 of them are 32, 50, 26, 35, 16, what is the missing number?
Answer: 51