Keystones — Capstone
Five GCSE retrieval questions · 31 December 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 150. What are the numbers?
Answer: 49, 50, and 51 -
2. Algebra
Factorise fully: 14x² + 4x
Answer: 2x(7x + 2) -
3. Geometry
Adjacent = 14cm, hypotenuse = 31cm. Find the angle
Answer: 63.2° -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
The mean of 6 numbers is 38. If 5 of them are 30, 16, 46, 49, 45, what is the missing number?
Answer: 42