Keystones — Capstone
Five GCSE retrieval questions · 12 November 2022 · 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
Factorise fully: 28x² + 20x
Answer: 4x(7x + 5) -
3. Geometry
Adjacent = 15cm, hypotenuse = 24cm. Find the angle
Answer: 51.3° -
4. Ratio
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 39. If 3 of them are 17, 27, 39, what is the missing number?
Answer: 73