Keystones — Lintel
Five GCSE retrieval questions · 30 July 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 96. What are the numbers?
Answer: 31, 32, and 33 -
2. Algebra
Factorise fully: 25x² + 35x
Answer: 5x(5x + 7) -
3. Geometry
Adjacent = 16cm, hypotenuse = 34cm. Find the angle
Answer: 61.9° -
4. Ratio
Simplify: 15:9:15
Answer: 5:3:5 -
5. Statistics
A bag has 5 red and 5 blue balls. What is the probability of picking a red ball?
Answer: 1⁄2