Keystones — Lintel
Five GCSE retrieval questions · 10 February 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 78 + ? = 100
Answer: 22 -
2. Algebra
Solve: 9x = 36
Answer: x = 4 -
3. Geometry
Calculate the hypotenuse when a = 10cm and b = 13cm
Answer: 16.4cm -
4. Ratio
Simplify: 12:8:12
Answer: 3:2:3 -
5. Statistics
Calculate the mean of: 46, 34, 25, 35, 42, 8, 32, 30
Answer: 31.5