Keystones — Lintel
Five GCSE retrieval questions · 10 November 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
94000000
Answer: 9.4 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 30
Answer: (x + 6)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 15cm, angle = 62°. Find adjacent side
Answer: 7cm -
4. Ratio Mixed ratio problems
£238.00 is shared between A and B in the ratio 3:4. How much does A receive?
Answer: £102.00 -
5. Statistics Mean
The mean of 5 numbers is 33. If 4 of them are 38, 17, 22, 37, what is the missing number?
Answer: 51