Keystones — Capstone
Five GCSE retrieval questions · 20 October 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 129. What are the numbers?
Answer: 42, 43, and 44 -
2. Algebra
Simplify: 10x - 2x + 7y - 4y
Answer: 8x + 3y -
3. Geometry
Adjacent = 25cm, hypotenuse = 32cm. Find the angle
Answer: 38.6° -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 25. If 3 of them are 23, 38, 36, what is the missing number?
Answer: 3