Keystones — Lintel
Five GCSE retrieval questions · 8 August 2024 · mathsvault.uk/keystones
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1. Number
Calculate: -23 + (34)
Answer: 11 -
2. Algebra
Factorise fully: 10x² + 15x
Answer: 5x(2x + 3) -
3. Geometry
Adjacent = 28cm, hypotenuse = 40cm. Find the angle
Answer: 45.6° -
4. Ratio
Simplify: 12:16:12
Answer: 3:4:3 -
5. Statistics
Calculate the mean of: 18, 22, 5, 21, 27, 13, 42
Answer: 21.1