Keystones — Lintel
Five GCSE retrieval questions · 23 January 2022 · mathsvault.uk/keystones
-
1. Number Converting to standard form
32000
Answer: 3.2 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 13x + 42
Answer: (x - 7)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 36cm, angle = 44°. Find adjacent side
Answer: 25.9cm -
4. Ratio Mixed ratio problems
Express the first part of 6:5 as a fraction in simplest form
Answer: 6⁄11 -
5. Statistics Mean
The mean of 4 numbers is 21. If 3 of them are 44, 28, 48, what is the missing number?
Answer: -36