Keystones — Lintel
Five GCSE retrieval questions · 2 October 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0002
Answer: 2 × 10^-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 39cm, angle = 33°. Find adjacent side
Answer: 32.7cm -
4. Ratio Mixed ratio problems
£147.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £42.00 -
5. Statistics Mean
The mean of 6 numbers is 28. If 5 of them are 37, 23, 23, 15, 25, what is the missing number?
Answer: 45