Keystones — Lintel
Five GCSE retrieval questions · 13 July 2021 · mathsvault.uk/keystones
-
1. Number Converting to standard form
7500000
Answer: 7.5 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 28cm, angle = 59°. Find opposite
Answer: 46.6cm -
4. Ratio Mixed ratio problems
In ratio 2:2:3, what fraction is the second part?
Answer: 2⁄7 -
5. Statistics Mean
Calculate the mean of: 13, 36, 20, 24, 13, 18, 19
Answer: 20.4