Keystones — Lintel
Five GCSE retrieval questions · 17 October 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
6000000
Answer: 6 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 14
Answer: (x - 2)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 17cm, angle = 33°. Find adjacent side
Answer: 14.3cm -
4. Ratio Mixed ratio problems
£162.00 is shared between A and B in the ratio 1:2. How much does A receive?
Answer: £54.00 -
5. Statistics Mean
The mean of 5 numbers is 37. If 4 of them are 28, 24, 43, 17, what is the missing number?
Answer: 73