Keystones — Lintel
Five GCSE retrieval questions · 16 June 2011 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 4,400,000 in standard form
Answer: 4.4 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 2x - 24
Answer: (x + 4)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 10cm, angle = 43°. Find opposite. Give your answer to 2 decimal places
Answer: 9.33cm -
4. Ratio Mixed ratio problems
Divide 189 in the ratio 1:4:4
Answer: 21, 84 and 84 -
5. Statistics Mean
Calculate the mean of: 33, 21, 39, 35, 45, 38. Give your answer to 2 decimal places
Answer: 35.17