Keystones — Lintel
Five GCSE retrieval questions · 6 March 2019 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.0066
Answer: 6.6 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 4x + 4
Answer: (x - 2)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 17cm, angle = 37°. Find opposite
Answer: 12.8cm -
4. Ratio Mixed ratio problems
In ratio 3:1:2, what fraction is the second part?
Answer: 1⁄6 -
5. Statistics Mean
The mean of 6 numbers is 27. If 5 of them are 43, 35, 46, 50, 29, what is the missing number?
Answer: -41