Keystones — Lintel
Five GCSE retrieval questions · 8 December 2014 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 46,000 in standard form
Answer: 4.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 10
Answer: (x - 1)(x - 10) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 30cm, angle = 44°. Find opposite. Give your answer to 2 decimal places
Answer: 28.97cm -
4. Ratio Mixed ratio problems
£245.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £70.00 -
5. Statistics Mean
The mean of 4 numbers is 26. If 3 of them are 19, 30, 50, what is the missing number?
Answer: 5