Keystones — Lintel
Five GCSE retrieval questions · 17 June 2022 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 123. What are the numbers?
Answer: 40, 41, and 42 -
2. Algebra
Factorise: 8x² + 5x
Answer: x(8x + 5) -
3. Geometry
Find the perimeter: hypotenuse = 14cm, one side = 11cm
Answer: 33.7cm -
4. Ratio
Simplify: 12:4:6
Answer: 6:2:3 -
5. Statistics
Calculate the mean of: 35, 23, 22, 31, 14, 29, 38, 23
Answer: 26.9