Keystones — Lintel
Five GCSE retrieval questions · 29 May 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0075
Answer: 7.5 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 30
Answer: (x - 5)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 31cm, angle = 64°. Find adjacent side
Answer: 13.6cm -
4. Ratio Mixed ratio problems
£294.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £168.00 -
5. Statistics Mean
The mean of 4 numbers is 38. If 3 of them are 20, 22, 32, what is the missing number?
Answer: 78