Keystones — Lintel
Five GCSE retrieval questions · 31 July 2021 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.0077
Answer: 7.7 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 28
Answer: (x - 7)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 60°. Find opposite
Answer: 38.cm -
4. Ratio Mixed ratio problems
In ratio 1:2:3, what fraction is the second part?
Answer: 2⁄6 -
5. Statistics Mean
Calculate the mean of: 29, 38, 12, 29, 44, 18, 6
Answer: 25.1