Keystones — Lintel
Five GCSE retrieval questions · 9 August 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 422 + 918
Answer: 422 + 918 = 1340 -
2. Algebra
Solve: 4x = 52
Answer: x = 13 -
3. Geometry
Calculate the area of a right triangle with perpendicular sides 8cm and 15cm
Answer: 60cm² -
4. Ratio
Simplify: 12:8:6
Answer: 6:4:3 -
5. Statistics
Find the range of: -1, -5, 31, -17, -27
Answer: 58