Keystones — Lintel
Five GCSE retrieval questions · 14 September 2022 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 105. What are the numbers?
Answer: 34, 35, and 36 -
2. Algebra
Solve: 8x = 72
Answer: x = 9 -
3. Geometry
Calculate the hypotenuse when a = 10cm and b = 5cm
Answer: 11.18cm -
4. Ratio
Simplify: 8:24:24
Answer: 1:3:3 -
5. Statistics
A bag has 4 red and 7 blue balls. What is the probability of picking a red ball?
Answer: 4⁄11