Keystones — Lintel
Five GCSE retrieval questions · 7 December 2023 · 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
Factorise: 8x² + 3x
Answer: x(8x + 3) -
3. Geometry
Adjacent = 30cm, hypotenuse = 41cm. Find the angle
Answer: 43° -
4. Ratio
Simplify: 16:20:20
Answer: 4:5:5 -
5. Statistics
Find the range of: -18, 47, 22, 44, -23
Answer: 70