Keystones — Lintel
Five GCSE retrieval questions · 9 May 2014 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 0.058 in standard form
Answer: 5.8 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 24x + 144
Answer: (x - 12)(x - 12) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 25cm, angle = 44°. Find opposite. Give your answer to 2 decimal places
Answer: 24.14cm -
4. Ratio Mixed ratio problems
£287.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £82.00 -
5. Statistics Mean
The mean of 6 numbers is 32. If 5 of them are 24, 43, 45, 15, 31, what is the missing number?
Answer: 34