Keystones — Capstone
Five GCSE retrieval questions · 12 September 2021 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 141. What are the numbers?
Answer: 46, 47, and 48 -
2. Algebra
Solve: x⁄8 = 1.25
Answer: x = 10 -
3. Geometry
Adjacent = 21cm, hypotenuse = 30cm. Find the angle
Answer: 45.6° -
4. Ratio
Calculate 43.1% of 560
Answer: 241.36 -
5. Statistics
The mean of 5 numbers is 33. If 4 of them are 47, 38, 21, 40, what is the missing number?
Answer: 19