Keystones — Lintel
Five GCSE retrieval questions · 15 August 2025 · mathsvault.uk/keystones
-
1. Number
What is the missing number: 73 + ? = 100
Answer: 27 -
2. Algebra
Factorise fully: 12x² + 6x
Answer: 3x(4x + 2) -
3. Geometry
Adjacent = 23cm, hypotenuse = 42cm. Find the angle
Answer: 56.8° -
4. Ratio
Calculate 21.5% of 556
Answer: 119.54 -
5. Statistics
Find the range of: 25, 27, 7, 27, -16
Answer: 43