Keystones — Lintel
Five GCSE retrieval questions · 20 March 2013 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 53,000 in standard form
Answer: 5.3 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 30
Answer: (x - 5)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 35cm, angle = 53°. Find adjacent side. Give your answer to 2 decimal places
Answer: 21.06cm -
4. Ratio Mixed ratio problems
£180.00 is shared between A and B in the ratio 5:4. How much does A receive?
Answer: £100.00 -
5. Statistics Mean
The mean of 4 numbers is 37. If 3 of them are 48, 28, 43, what is the missing number?
Answer: 29