Keystones — Lintel
Five GCSE retrieval questions · 24 June 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 42 + ? = 194
Answer: 152 -
2. Algebra
Solve: 5x = 20
Answer: x = 4 -
3. Geometry
Calculate the area of a circle with diameter 22cm
Answer: 380.13cm² -
4. Ratio
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics
Find the range of: -24, 23, 12, 21, 0
Answer: 47