Keystones — Lintel
Five GCSE retrieval questions · 19 April 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 141. What are the numbers?
Answer: 46, 47, and 48 -
2. Algebra
Factorise: 3x² + 8x
Answer: x(3x + 8) -
3. Geometry
Find c if a = 12cm and b = 14cm in a right triangle
Answer: 18.4cm -
4. Ratio
Find 68% of 64
Answer: 43.52 -
5. Statistics
Find the range of: -14, -21, 41, 31, 14
Answer: 62