Keystones — Lintel
Five GCSE retrieval questions · 26 June 2018 · mathsvault.uk/keystones
-
1. Number Converting to standard form
7600000
Answer: 7.6 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 28
Answer: (x - 7)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 20cm, angle = 41°. Find adjacent side
Answer: 15.cm -
4. Ratio Mixed ratio problems
In ratio 1:1:2, what fraction is the second part?
Answer: 1⁄4 -
5. Statistics Mean
The mean of 6 numbers is 26. If 5 of them are 34, 24, 27, 37, 15, what is the missing number?
Answer: 19