Keystones — Capstone
Five GCSE retrieval questions · 21 May 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 123. What are the numbers?
Answer: 40, 41, and 42 -
2. Algebra
Expand: 2(7x - 12)
Answer: 14x - 24 -
3. Geometry
Adjacent = 15cm, hypotenuse = 34cm. Find the angle
Answer: 63.8° -
4. Ratio
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 23. If 3 of them are 19, 36, 47, what is the missing number?
Answer: -10