Keystones — Lintel
Five GCSE retrieval questions · 14 July 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
66000
Answer: 6.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 48
Answer: (x + 8)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 18cm, angle = 38°. Find adjacent side
Answer: 14.2cm -
4. Ratio Mixed ratio problems
£414.00 is shared between A and B in the ratio 4:5. How much does A receive?
Answer: £184.00 -
5. Statistics Mean
The mean of 6 numbers is 30. If 5 of them are 35, 19, 45, 45, 40, what is the missing number?
Answer: -4