Keystones — Lintel
Five GCSE retrieval questions · 15 May 2010 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 69,000 in standard form
Answer: 6.9 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 36
Answer: (x + 9)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 19cm, angle = 31°. Find opposite. Give your answer to 2 decimal places
Answer: 11.42cm -
4. Ratio Mixed ratio problems
Simplify the ratio £2 : 55p
Answer: 40:11 -
5. Statistics Mean
Calculate the mean of: 35, 39, 16, 27, 50, 46
Answer: 35.5