Keystones — Lintel
Five GCSE retrieval questions · 12 June 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 4.82 + 31.92 + 0.979
Answer: 4.82 + 31.92 + 0.979 = 37.719 -
2. Algebra
Solve: 5x = 35
Answer: x = 7 -
3. Geometry
Find c if a = 18cm and b = 23cm in a right triangle
Answer: 29.2cm -
4. Ratio
Calculate 43.4% of 696
Answer: 302.06 -
5. Statistics
Calculate the mean of: 42, 11, 11, 5, 38, 7, 40, 45
Answer: 24.9