Keystones — Lintel
Five GCSE retrieval questions · 12 October 2010 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 710,000 in standard form
Answer: 7.1 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x - 7
Answer: (x + 1)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 12cm, angle = 57°. Find opposite. Give your answer to 2 decimal places
Answer: 18.48cm -
4. Ratio Mixed ratio problems
Simplify: 12:6:10
Answer: 6:3:5 -
5. Statistics Mean
Calculate the mean of: 28, 44, 26, 44, 6, 33, 29, 8
Answer: 27.25