Keystones — Capstone
Five GCSE retrieval questions · 19 December 2024 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 105. What are the numbers?
Answer: 34, 35, and 36 -
2. Algebra
Solve: x⁄7 = 5.1428571428571
Answer: x = 36 -
3. Geometry
Find c if a = 19cm and b = 10cm in a right triangle
Answer: 21.5cm -
4. Ratio
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 33. If 4 of them are 50, 47, 45, 15, what is the missing number?
Answer: 8