Keystones — Capstone
Five GCSE retrieval questions · 11 January 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: 6x - 2x + 4y - 2y
Answer: 4x + 2y -
3. Geometry
A right triangle has hypotenuse 17cm and one side 8cm. Find its area
Answer: 60cm² -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 24. If 4 of them are 33, 40, 20, 49, what is the missing number?
Answer: -22