Keystones — Lintel
Five GCSE retrieval questions · 11 November 2019 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.0022
Answer: 2.2 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 9
Answer: (x - 3)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 46°. Find opposite
Answer: 22.8cm -
4. Ratio Mixed ratio problems
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 13, 43, 16, 32, 36, 28, 26, 21
Answer: 26.9