Keystones — Lintel
Five GCSE retrieval questions · 1 February 2020 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.0001
Answer: 1 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 12
Answer: (x + 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 33cm, angle = 29°. Find adjacent side
Answer: 28.9cm -
4. Ratio Mixed ratio problems
Express the first part of 3:4 as a fraction in simplest form
Answer: 3⁄7 -
5. Statistics Mean
Calculate the mean of: 37, 36, 15, 20, 31, 44, 46
Answer: 32.7