Keystones — Capstone
Five GCSE retrieval questions · 6 September 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 108. What are the numbers?
Answer: 35, 36, and 37 -
2. Algebra
Factorise fully: 20x² + 35x
Answer: 5x(4x + 7) -
3. Geometry
Adjacent = 28cm, hypotenuse = 48cm. Find the angle
Answer: 54.3° -
4. Ratio
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 28. If 4 of them are 43, 16, 19, 35, what is the missing number?
Answer: 27