Keystones — Lintel
Five GCSE retrieval questions · 2 July 2012 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 0.0015 in standard form
Answer: 1.5 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 7x - 44
Answer: (x + 11)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 13cm, angle = 56°. Find opposite. Give your answer to 2 decimal places
Answer: 19.27cm -
4. Ratio Mixed ratio problems
Express the second part of 7:4 as a fraction in simplest form
Answer: 4⁄11 -
5. Statistics Mean
Calculate the mean of: 25, 11, 41, 26, 13, 5, 34, 45
Answer: 25