Keystones — Capstone
Five GCSE retrieval questions · 24 April 2021 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 96. What are the numbers?
Answer: 31, 32, and 33 -
2. Algebra
Simplify: 11x - 9x + 9y - 7y
Answer: 2x + 2y -
3. Geometry
Find c if a = 8cm and b = 21cm in a right triangle
Answer: 22.5cm -
4. Ratio
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 27. If 3 of them are 28, 20, 17, what is the missing number?
Answer: 43