Keystones — Lintel
Five GCSE retrieval questions · 20 May 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.034
Answer: 3.4 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 24
Answer: (x + 6)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 29cm, angle = 65°. Find adjacent side
Answer: 12.3cm -
4. Ratio Mixed ratio problems
£328.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £205.00 -
5. Statistics Mean
The mean of 6 numbers is 29. If 5 of them are 17, 35, 31, 44, 24, what is the missing number?
Answer: 23