Keystones — Bedrock
Five GCSE retrieval questions · 11 August 2026 · mathsvault.uk/keystones
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1. Number Adding directed numbers
Calculate: -9 + 8
Answer: -1 -
2. Algebra Two-step equations
Solve: 2x + 5 = 19
Answer: x = 7 -
3. Geometry Converting units of time
Convert 4 minutes to seconds
Answer: 240 seconds -
4. Ratio Writing a ratio as 1 : n
Write 8:32 in the form 1:n
Answer: 1:4 -
5. Statistics Range
Find the range of: 34, 15, 20, 22, 27
Answer: 19