Keystones — Lintel
Five GCSE retrieval questions · 4 November 2020 · mathsvault.uk/keystones
-
1. Number Converting to standard form
4200000
Answer: 4.2 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 9
Answer: (x - 3)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 18cm, angle = 52°. Find adjacent side
Answer: 11.cm -
4. Ratio Mixed ratio problems
Divide 216 in the ratio 4:3:2
Answer: 96, 72 and 48 -
5. Statistics Mean
Calculate the mean of: 30, 19, 42, 36, 12, 7
Answer: 24.3