Keystones — Capstone
Five GCSE retrieval questions · 2 August 2023 · 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
Complete the square: x² + 5.6x
Answer: (x + 2.8)² - 7.84 -
3. Geometry
Adjacent = 17cm, hypotenuse = 29cm. Find the angle
Answer: 54.1° -
4. Ratio
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics
The mean of 6 numbers is 34. If 5 of them are 28, 32, 50, 46, 28, what is the missing number?
Answer: 20