Keystones — Capstone
Five GCSE retrieval questions · 17 May 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 114. What are the numbers?
Answer: 37, 38, and 39 -
2. Algebra
Simplify: 12x - 9x + 10y - 2y
Answer: 3x + 8y -
3. Geometry
A right triangle has hypotenuse 10cm and one side 6cm. Find its area
Answer: 24cm² -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
The mean of 6 numbers is 26. If 5 of them are 46, 20, 45, 33, 27, what is the missing number?
Answer: -15