Keystones — Bedrock
Five GCSE retrieval questions · 4 May 2026 · mathsvault.uk/keystones
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1. Number Adding directed numbers
Calculate: 6 + (-9)
Answer: -3 -
2. Algebra Two-step equations
Solve: 2x + 5 = 21
Answer: x = 8 -
3. Geometry Converting units of time
Convert 6 minutes to seconds
Answer: 360 seconds -
4. Ratio Writing a ratio as 1 : n
Write 8:24 in the form 1:n
Answer: 1:3 -
5. Statistics Range
Find the range of: 37, 36, 21, 32, 16
Answer: 21