Keystones — Lintel
Five GCSE retrieval questions · 24 March 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 147. What are the numbers?
Answer: 48, 49, and 50 -
2. Algebra
Solve: 6x = 42
Answer: x = 7 -
3. Geometry
Adjacent = 22cm, hypotenuse = 40cm. Find the angle
Answer: 56.6° -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
A bag has 5 red and 5 blue balls. What is the probability of picking a red ball?
Answer: 1⁄2