Keystones — Lintel
Five GCSE retrieval questions · 6 January 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 38 + ? = 192
Answer: 154 -
2. Algebra
Solve: 4x = 28
Answer: x = 7 -
3. Geometry
Calculate the area of a circle with diameter 24cm
Answer: 452.39cm² -
4. Ratio
Calculate 18% of 897
Answer: 161.46 -
5. Statistics
Calculate the mean of: 7, 20, 6, 5, 20, 40, 13, 48
Answer: 19.9