Keystones — Capstone
Five GCSE retrieval questions · 2 June 2021 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 99. What are the numbers?
Answer: 32, 33, and 34 -
2. Algebra
Solve: x⁄2 = 13
Answer: x = 26 -
3. Geometry
Adjacent = 21cm, hypotenuse = 26cm. Find the angle
Answer: 36.1° -
4. Ratio
Calculate 14.6% of 550
Answer: 80.3 -
5. Statistics
The mean of 5 numbers is 22. If 4 of them are 39, 18, 46, 47, what is the missing number?
Answer: -40