Keystones — Lintel
Five GCSE retrieval questions · 29 August 2013 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 0.003 in standard form
Answer: 3 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 17x + 60
Answer: (x - 5)(x - 12) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 23cm, angle = 61°. Find adjacent side. Give your answer to 2 decimal places
Answer: 11.15cm -
4. Ratio Mixed ratio problems
In ratio 11:3:6, what fraction is the first part?
Answer: 11⁄20 -
5. Statistics Mean
Calculate the mean of: 21, 29, 47, 18, 19, 35. Give your answer to 2 decimal places
Answer: 28.17