Keystones — Lintel
Five GCSE retrieval questions · 16 March 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
6000000
Answer: 6 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 12
Answer: (x + 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 20cm, angle = 48°. Find adjacent side
Answer: 13.4cm -
4. Ratio Mixed ratio problems
£230.00 is shared between A and B in the ratio 3:2. How much does A receive?
Answer: £138.00 -
5. Statistics Mean
The mean of 4 numbers is 28. If 3 of them are 28, 22, 35, what is the missing number?
Answer: 27