Keystones — Lintel
Five GCSE retrieval questions · 26 November 2020 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.006
Answer: 6 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 14
Answer: (x - 2)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 15cm, angle = 43°. Find adjacent side
Answer: 11cm -
4. Ratio Mixed ratio problems
Divide 216 in the ratio 2:3:4
Answer: 48, 72 and 96 -
5. Statistics Mean
Calculate the mean of: 34, 16, 6, 14, 39, 42, 31, 23
Answer: 25.6