Keystones — Lintel
Five GCSE retrieval questions · 2 June 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
740000
Answer: 7.4 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 35
Answer: (x - 5)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 32cm, angle = 39°. Find adjacent side
Answer: 24.9cm -
4. Ratio Mixed ratio problems
£175.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £100.00 -
5. Statistics Mean
The mean of 6 numbers is 20. If 5 of them are 36, 45, 42, 28, 15, what is the missing number?
Answer: -46