Keystones — Lintel
Five GCSE retrieval questions · 18 January 2011 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 5,300,000 in standard form
Answer: 5.3 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - x - 2
Answer: (x + 1)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 26cm, angle = 34°. Find adjacent side. Give your answer to 2 decimal places
Answer: 21.55cm -
4. Ratio Mixed ratio problems
Divide 140 in the ratio 4:2:1
Answer: 80, 40 and 20 -
5. Statistics Mean
Calculate the mean of: 32, 31, 39, 32, 23, 45. Give your answer to 2 decimal places
Answer: 33.67