Keystones — Lintel
Five GCSE retrieval questions · 24 August 2022 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 123. What are the numbers?
Answer: 40, 41, and 42 -
2. Algebra
Solve: 5x = 75
Answer: x = 15 -
3. Geometry
Calculate the area of a circle with diameter 18cm
Answer: 254.47cm² -
4. Ratio
Simplify: 12:10:10
Answer: 6:5:5 -
5. Statistics
A spinner has 5 red, 6 blue and 6 green sections. Probability of landing on red?
Answer: 5⁄17