Keystones — Capstone
Five GCSE retrieval questions · 26 March 2022 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 117. What are the numbers?
Answer: 38, 39, and 40 -
2. Algebra
Solve: x⁄5 = 7.4
Answer: x = 37 -
3. Geometry
Find c if a = 19cm and b = 11cm in a right triangle
Answer: 22cm -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
The mean of 6 numbers is 30. If 5 of them are 31, 34, 49, 42, 15, what is the missing number?
Answer: 9