Keystones — Lintel
Five GCSE retrieval questions · 23 November 2016 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 920,000 in standard form
Answer: 9.2 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 14x + 48
Answer: (x - 6)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 35cm, angle = 62°. Find adjacent side. Give your answer to 2 decimal places
Answer: 16.43cm -
4. Ratio Mixed ratio problems
Black and white sweets are in the ratio 7:15. What fraction of the sweets are black?
Answer: 7⁄22 -
5. Statistics Mean
Calculate the mean of: 5, 37, 41, 50, 46, 31, 42
Answer: 36