Keystones — Lintel
Five GCSE retrieval questions · 19 March 2026 · mathsvault.uk/keystones
-
1. Number
What is the missing number: 50 + ? = 182
Answer: 132 -
2. Algebra
Factorise: 3x² + 2x
Answer: x(3x + 2) -
3. Geometry
Calculate the hypotenuse when a = 7cm and b = 14cm
Answer: 15.65cm -
4. Ratio
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics
A spinner has 3 red, 5 blue and 6 green sections. Probability of landing on red?
Answer: 3⁄14