Keystones — Capstone
Five GCSE retrieval questions · 27 March 2021 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 144. What are the numbers?
Answer: 47, 48, and 49 -
2. Algebra
Simplify: 10x - 6x + 9y - 5y
Answer: 4x + 4y -
3. Geometry
Find c if a = 15cm and b = 11cm in a right triangle
Answer: 18.6cm -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 36. If 4 of them are 32, 24, 49, 23, what is the missing number?
Answer: 52