Keystones — Lintel
Five GCSE retrieval questions · 11 June 2012 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 0.00013 in standard form
Answer: 1.3 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 16x + 55
Answer: (x + 11)(x + 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 15cm, angle = 57°. Find adjacent side. Give your answer to 2 decimal places
Answer: 8.17cm -
4. Ratio Mixed ratio problems
Simplify: 12:18:15
Answer: 4:6:5 -
5. Statistics Mean
Calculate the mean of: 13, 36, 34, 41, 12, 37. Give your answer to 2 decimal places
Answer: 28.83