Keystones — Lintel
Five GCSE retrieval questions · 13 September 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
2700000
Answer: 2.7 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 18
Answer: (x - 6)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 19cm, angle = 50°. Find adjacent side
Answer: 12.2cm -
4. Ratio Mixed ratio problems
£306.00 is shared between A and B in the ratio 5:4. How much does A receive?
Answer: £170.00 -
5. Statistics Mean
The mean of 6 numbers is 32. If 5 of them are 49, 15, 30, 19, 46, what is the missing number?
Answer: 33