Keystones — Lintel
Five GCSE retrieval questions · 12 April 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
430000
Answer: 4.3 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 14
Answer: (x - 7)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 15cm, angle = 40°. Find adjacent side
Answer: 11.5cm -
4. Ratio Mixed ratio problems
£320.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £200.00 -
5. Statistics Mean
The mean of 5 numbers is 29. If 4 of them are 28, 35, 32, 18, what is the missing number?
Answer: 32