Keystones — Lintel
Five GCSE retrieval questions · 19 October 2022 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.0076
Answer: 7.6 × 10^-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 15
Answer: (x + 5)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 13cm, angle = 32°. Find opposite
Answer: 8.cm -
4. Ratio Mixed ratio problems
In ratio 1:4:2, what fraction is the second part?
Answer: 4⁄7 -
5. Statistics Mean
Calculate the mean of: 22, 33, 34, 27, 28, 38, 49, 32
Answer: 32.9