Keystones — Lintel
Five GCSE retrieval questions · 29 May 2018 · mathsvault.uk/keystones
-
1. Number Converting to standard form
5600000
Answer: 5.6 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 30
Answer: (x - 6)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 50°. Find opposite
Answer: 26.2cm -
4. Ratio Mixed ratio problems
Simplify: 12:12:18
Answer: 2:2:3 -
5. Statistics Mean
The mean of 5 numbers is 32. If 4 of them are 27, 48, 20, 37, what is the missing number?
Answer: 28