Keystones — Capstone
Five GCSE retrieval questions · 14 July 2021 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 120. What are the numbers?
Answer: 39, 40, and 41 -
2. Algebra
Expand: 5(5x - 12)
Answer: 25x - 60 -
3. Geometry
Adjacent = 21cm, hypotenuse = 28cm. Find the angle
Answer: 41.4° -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 27. If 4 of them are 20, 16, 36, 36, what is the missing number?
Answer: 27