Keystones — Capstone
Five GCSE retrieval questions · 9 April 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 150. What are the numbers?
Answer: 49, 50, and 51 -
2. Algebra
Expand: 3(5x - 7)
Answer: 15x - 21 -
3. Geometry
Find c if a = 14cm and b = 20cm in a right triangle
Answer: 24.4cm -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
A spinner has 6 red, 3 blue and 6 green sections. Probability of landing on red?
Answer: 2⁄5