Keystones — Lintel
Five GCSE retrieval questions · 26 April 2010 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 0.00097 in standard form
Answer: 9.7 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 15x + 56
Answer: (x - 7)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 29cm, angle = 55°. Find adjacent side. Give your answer to 2 decimal places
Answer: 16.63cm -
4. Ratio Mixed ratio problems
£160.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £100.00 -
5. Statistics Mean
The mean of 4 numbers is 26. If 3 of them are 19, 27, 31, what is the missing number?
Answer: 27