Keystones — Lintel
Five GCSE retrieval questions · 6 October 2022 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 99. What are the numbers?
Answer: 32, 33, and 34 -
2. Algebra
Solve: 5x = 75
Answer: x = 15 -
3. Geometry
Adjacent = 27cm, hypotenuse = 45cm. Find the angle
Answer: 53.1° -
4. Ratio
Find 61% of 212
Answer: 129.32 -
5. Statistics
A bag has 5 red and 7 blue balls. What is the probability of picking a red ball?
Answer: 5⁄12