Keystones — Lintel
Five GCSE retrieval questions · 29 June 2022 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.0039
Answer: 3.9 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 8
Answer: (x - 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 36cm, angle = 62°. Find adjacent side
Answer: 16.9cm -
4. Ratio Mixed ratio problems
In ratio 1:4:3, what fraction is the second part?
Answer: 4⁄8 -
5. Statistics Mean
Calculate the mean of: 44, 41, 7, 12, 16, 20, 11, 7
Answer: 19.8