Keystones — Capstone
Five GCSE retrieval questions · 2 May 2022 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 90. What are the numbers?
Answer: 29, 30, and 31 -
2. Algebra
Simplify: 7x - 4x + 6y - y
Answer: 3x + 5y -
3. Geometry
A right triangle has hypotenuse 13cm and one side 5cm. Find its area
Answer: 30cm² -
4. Ratio
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 40. If 3 of them are 17, 41, 48, what is the missing number?
Answer: 54