Keystones — Lintel
Five GCSE retrieval questions · 6 December 2021 · mathsvault.uk/keystones
-
1. Number
What is the missing number: 45 + ? = 189
Answer: 144 -
2. Algebra
Factorise fully: 35x² + 15x
Answer: 5x(7x + 3) -
3. Geometry
A circle has area 201.cm². Find its radius (dp)
Answer: 8cm -
4. Ratio
Calculate 25.8% of 442
Answer: 114.04 -
5. Statistics
Find the range of: -16, -29, -13, 45, -2
Answer: 74