Keystones — Lintel
Five GCSE retrieval questions · 26 August 2014 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 0.00095 in standard form
Answer: 9.5 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 6
Answer: (x + 6)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 19cm, angle = 25°. Find adjacent side. Give your answer to 2 decimal places
Answer: 17.22cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2kg : 400g
Answer: 5:1 -
5. Statistics Mean
Calculate the mean of: 25, 13, 34, 31, 22, 7
Answer: 22