Keystones — Lintel
Five GCSE retrieval questions · 26 August 2025 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 93. What are the numbers?
Answer: 30, 31, and 32 -
2. Algebra
Solve: 7x = 56
Answer: x = 8 -
3. Geometry
Calculate the hypotenuse when a = 6cm and b = 15cm
Answer: 16.16cm -
4. Ratio
Find 66% of 440
Answer: 290.4 -
5. Statistics
Calculate the mean of: 32, 18, 17, 33, 5, 27
Answer: 22