Keystones — Lintel
Five GCSE retrieval questions · 18 April 2013 · 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 + 17x + 66
Answer: (x + 11)(x + 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 40cm, angle = 26°. Find adjacent side. Give your answer to 2 decimal places
Answer: 35.95cm -
4. Ratio Mixed ratio problems
Simplify the ratio 6kg : 100g
Answer: 60:1 -
5. Statistics Mean
Calculate the mean of: 12, 46, 25, 24, 45, 39, 15, 47. Give your answer to 2 decimal places
Answer: 31.63