Keystones — Lintel
Five GCSE retrieval questions · 12 April 2020 · mathsvault.uk/keystones
-
1. Number Converting to standard form
34000
Answer: 3.4 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 24
Answer: (x - 6)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 16cm, angle = 57°. Find opposite
Answer: 24.6cm -
4. Ratio Mixed ratio problems
Simplify: 4:4:10
Answer: 2:2:5 -
5. Statistics Mean
The mean of 4 numbers is 30. If 3 of them are 15, 50, 26, what is the missing number?
Answer: 29