Keystones — Lintel
Five GCSE retrieval questions · 4 February 2021 · mathsvault.uk/keystones
-
1. Number Converting to standard form
83000
Answer: 8.3 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 30
Answer: (x - 5)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 23cm, angle = 53°. Find adjacent side
Answer: 13.8cm -
4. Ratio Mixed ratio problems
In ratio 3:3:4, what fraction is the second part?
Answer: 3⁄10 -
5. Statistics Mean
Calculate the mean of: 33, 28, 7, 38, 6, 8
Answer: 20