Keystones — Capstone
Five GCSE retrieval questions · 4 January 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 117. What are the numbers?
Answer: 38, 39, and 40 -
2. Algebra
Simplify: 5x - 2x + 8y - 2y
Answer: 3x + 6y -
3. Geometry
Find c if a = 8cm and b = 21cm in a right triangle
Answer: 22.5cm -
4. Ratio
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics
A spinner has 3 red, 6 blue and 6 green sections. Probability of landing on red?
Answer: 1⁄5