Keystones — Capstone
Five GCSE retrieval questions · 8 November 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 93. What are the numbers?
Answer: 30, 31, and 32 -
2. Algebra
Factorise fully: 25x² + 35x
Answer: 5x(5x + 7) -
3. Geometry
Find c if a = 19cm and b = 18cm in a right triangle
Answer: 26.2cm -
4. Ratio
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics
A spinner has 3 red, 5 blue and 5 green sections. Probability of landing on red?
Answer: 3⁄13