Keystones — Capstone
Five GCSE retrieval questions · 29 December 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 90. What are the numbers?
Answer: 29, 30, and 31 -
2. Algebra
Solve: x⁄4 = 4.25
Answer: x = 17 -
3. Geometry
Adjacent = 13cm, hypotenuse = 24cm. Find the angle
Answer: 57.2° -
4. Ratio
Calculate 27.8% of 378
Answer: 105.08 -
5. Statistics
The mean of 5 numbers is 38. If 4 of them are 22, 15, 17, 36, what is the missing number?
Answer: 100