Keystones — Lintel
Five GCSE retrieval questions · 18 July 2024 · mathsvault.uk/keystones
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1. Number
What is the missing number: 81 + ? = 156
Answer: 75 -
2. Algebra
Factorise: 9x² + 2x
Answer: x(9x + 2) -
3. Geometry
Adjacent = 30cm, hypotenuse = 43cm. Find the angle
Answer: 45.8° -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
Calculate the mean of: 40, 17, 20, 27, 12, 15
Answer: 21.8