Keystones — Lintel
Five GCSE retrieval questions · 16 November 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 114. What are the numbers?
Answer: 37, 38, and 39 -
2. Algebra
Solve: 9x = 36
Answer: x = 4 -
3. Geometry
Adjacent = 21cm, hypotenuse = 30cm. Find the angle
Answer: 45.6° -
4. Ratio
Simplify: 15:9:9
Answer: 5:3:3 -
5. Statistics
A bag has 4 red and 6 blue balls. What is the probability of picking a red ball?
Answer: 2⁄5