Keystones — Lintel
Five GCSE retrieval questions · 1 September 2023 · 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
Solve: 2x = 10
Answer: x = 5 -
3. Geometry
Calculate the hypotenuse when a = 7cm and b = 14cm
Answer: 15.65cm -
4. Ratio
Simplify: 12:6:18
Answer: 2:1:3 -
5. Statistics
A bag has 7 red and 7 blue balls. What is the probability of picking a red ball?
Answer: 1⁄2