Keystones — Lintel
Five GCSE retrieval questions · 15 July 2020 · mathsvault.uk/keystones
-
1. Number Converting to standard form
57000000
Answer: 5.7 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 9
Answer: (x - 3)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 37cm, angle = 32°. Find adjacent side
Answer: 31.4cm -
4. Ratio Mixed ratio problems
Express the first part of 4:6 as a fraction in simplest form
Answer: 2⁄5 -
5. Statistics Mean
Calculate the mean of: 30, 47, 8, 30, 40, 45
Answer: 33.3