Keystones — Capstone
Five GCSE retrieval questions · 20 April 2021 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 120. What are the numbers?
Answer: 39, 40, and 41 -
2. Algebra
Factorise fully: 15x² + 18x
Answer: 3x(5x + 6) -
3. Geometry
Adjacent = 29cm, hypotenuse = 41cm. Find the angle
Answer: 45° -
4. Ratio
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 26. If 3 of them are 43, 49, 43, what is the missing number?
Answer: -31