Keystones — Capstone
Five GCSE retrieval questions · 23 July 2021 · 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
Simplify: 9x - 8x + 7y - 2y
Answer: x + 5y -
3. Geometry
Adjacent = 17cm, hypotenuse = 28cm. Find the angle
Answer: 52.6° -
4. Ratio
Calculate 14.9% of 279
Answer: 41.57 -
5. Statistics
The mean of 4 numbers is 38. If 3 of them are 28, 21, 30, what is the missing number?
Answer: 73