Keystones — Lintel
Five GCSE retrieval questions · 29 July 2024 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 93. What are the numbers?
Answer: 30, 31, and 32 -
2. Algebra
Factorise: 2x² + 6x
Answer: 2x(x + 3) -
3. Geometry
Calculate the area of a circle with diameter 14cm
Answer: 153.94cm² -
4. Ratio
Simplify: 12:9:6
Answer: 4:3:2 -
5. Statistics
A bag has 7 red and 3 blue balls. What is the probability of picking a red ball?
Answer: 7⁄10