Keystones — Lintel
Five GCSE retrieval questions · 11 December 2021 · mathsvault.uk/keystones
-
1. Number Converting to standard form
800000
Answer: 8 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 28
Answer: (x - 7)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 17cm, angle = 41°. Find opposite
Answer: 14.8cm -
4. Ratio Mixed ratio problems
In ratio 3:4:1, what fraction is the second part?
Answer: 4⁄8 -
5. Statistics Mean
Calculate the mean of: 23, 6, 7, 32, 32, 32, 15, 33
Answer: 22.5