Keystones — Lintel
Five GCSE retrieval questions · 31 August 2013 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 96,000 in standard form
Answer: 9.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 35cm, angle = 37°. Find adjacent side. Give your answer to 2 decimal places
Answer: 27.95cm -
4. Ratio Mixed ratio problems
Simplify the ratio 1 hour : 50 minutes
Answer: 6:5 -
5. Statistics Mean
The mean of 5 numbers is 37. If 4 of them are 29, 32, 40, 46, what is the missing number?
Answer: 38