Keystones — Lintel
Five GCSE retrieval questions · 8 April 2015 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 0.00056 in standard form
Answer: 5.6 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 7x + 6
Answer: (x + 6)(x + 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 18cm, angle = 29°. Find adjacent side. Give your answer to 2 decimal places
Answer: 15.74cm -
4. Ratio Mixed ratio problems
Divide 270 in the ratio 4:4:1
Answer: 120, 120 and 30 -
5. Statistics Mean
Calculate the mean of: 33, 19, 14, 11, 43, 7, 29, 36
Answer: 24