Keystones — Capstone
Five GCSE retrieval questions · 3 March 2022 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 129. What are the numbers?
Answer: 42, 43, and 44 -
2. Algebra
Solve: x⁄2 = 8.5
Answer: x = 17 -
3. Geometry
Find c if a = 10cm and b = 17cm in a right triangle
Answer: 19.7cm -
4. Ratio
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 30. If 4 of them are 47, 32, 36, 35, what is the missing number?
Answer: 0