Keystones — Lintel
Five GCSE retrieval questions · 22 October 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
85000000
Answer: 8.5 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 8
Answer: (x - 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 15cm, angle = 65°. Find adjacent side
Answer: 6.3cm -
4. Ratio Mixed ratio problems
£224.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £140.00 -
5. Statistics Mean
The mean of 6 numbers is 34. If 5 of them are 49, 22, 50, 19, 44, what is the missing number?
Answer: 20