Keystones — Capstone
Five GCSE retrieval questions · 19 July 2021 · 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
Expand: 2(3x - 6)
Answer: 6x - 12 -
3. Geometry
Adjacent = 12cm, hypotenuse = 24cm. Find the angle
Answer: 60° -
4. Ratio
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 28. If 4 of them are 16, 30, 35, 35, what is the missing number?
Answer: 24