Keystones — Lintel
Five GCSE retrieval questions · 7 March 2018 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 0.0067 in standard form
Answer: 6.7 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 6x - 7
Answer: (x + 7)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 18cm, angle = 44°. Find adjacent side. Give your answer to 2 decimal places
Answer: 12.95cm -
4. Ratio Mixed ratio problems
Simplify the ratio 5m : 10cm
Answer: 50:1 -
5. Statistics Mean
Calculate the mean of: 36, 20, 49, 31, 24, 13, 26, 50. Give your answer to 2 decimal places
Answer: 31.13