Keystones — Capstone
Five GCSE retrieval questions · 23 June 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 102. What are the numbers?
Answer: 33, 34, and 35 -
2. Algebra
Solve: x⁄2 = 17
Answer: x = 34 -
3. Geometry
Find c if a = 15cm and b = 13cm in a right triangle
Answer: 19.8cm -
4. Ratio
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics
The mean of 6 numbers is 36. If 5 of them are 27, 40, 18, 23, 22, what is the missing number?
Answer: 86