Keystones — Lintel
Five GCSE retrieval questions · 12 June 2022 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 111. What are the numbers?
Answer: 36, 37, and 38 -
2. Algebra
Factorise fully: 14x² + 6x
Answer: 2x(7x + 3) -
3. Geometry
Find c if a = 15cm and b = 23cm in a right triangle
Answer: 27.5cm -
4. Ratio
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics
Calculate the mean of: 16, 40, 37, 40, 32, 19, 16, 43
Answer: 30.4