Keystones — Lintel
Five GCSE retrieval questions · 2 January 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 126. What are the numbers?
Answer: 41, 42, and 43 -
2. Algebra
Factorise: 3x² + 5x
Answer: x(3x + 5) -
3. Geometry
A right triangle has hypotenuse 13cm and one side 5cm. Find its area
Answer: 30cm² -
4. Ratio
Simplify: 12:8:12
Answer: 3:2:3 -
5. Statistics
A spinner has 4 red, 3 blue and 6 green sections. Probability of landing on red?
Answer: 4⁄13