Keystones — Lintel
Five GCSE retrieval questions · 8 May 2024 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 129. What are the numbers?
Answer: 42, 43, and 44 -
2. Algebra
Solve: 6x = 48
Answer: x = 8 -
3. Geometry
Calculate the perimeter of a right triangle with sides 10cm and 7cm
Answer: 29.2cm -
4. Ratio
Simplify: 6:6:10
Answer: 3:3:5 -
5. Statistics
Calculate the mean of: 16, 28, 10, 16, 8, 24, 24, 15
Answer: 17.6