Keystones — Capstone
Five GCSE retrieval questions · 13 February 2022 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 138. What are the numbers?
Answer: 45, 46, and 47 -
2. Algebra
Find the next term: 1, 3, 7, 13, ...
Answer: 21 -
3. Geometry
Find c if a = 13cm and b = 12cm in a right triangle
Answer: 17.7cm -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 30. If 3 of them are 32, 22, 49, what is the missing number?
Answer: 17