Keystones — Lintel
Five GCSE retrieval questions · 2 June 2020 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.0044
Answer: 4.4 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 30
Answer: (x - 5)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 29cm, angle = 45°. Find adjacent side
Answer: 20.5cm -
4. Ratio Mixed ratio problems
In ratio 2:3:2, what fraction is the second part?
Answer: 3⁄7 -
5. Statistics Mean
The mean of 5 numbers is 36. If 4 of them are 46, 18, 30, 35, what is the missing number?
Answer: 51