Keystones — Lintel
Five GCSE retrieval questions · 27 July 2025 · mathsvault.uk/keystones
-
1. Number
The sum of three consecutive numbers is 132. What are the numbers?
Answer: 43, 44, and 45 -
2. Algebra
Factorise fully: 15x² + 15x
Answer: 5x(3x + 3) -
3. Geometry
Find c if a = 8cm and b = 23cm in a right triangle
Answer: 24.4cm -
4. Ratio
Find 72% of 473
Answer: 340.56 -
5. Statistics
Find the range of: 6, -10, 18, 50, 15
Answer: 60