Keystones — Capstone
Five GCSE retrieval questions · 2 May 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 132. What are the numbers?
Answer: 43, 44, and 45 -
2. Algebra
Complete the square: x² + 3.4x
Answer: (x + 1.7)² - 2.89 -
3. Geometry
Adjacent = 20cm, hypotenuse = 40cm. Find the angle
Answer: 60° -
4. Ratio
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 29. If 3 of them are 20, 23, 45, what is the missing number?
Answer: 28