Keystones — Bedrock
Five GCSE retrieval questions · 28 September 2026 · mathsvault.uk/keystones
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1. Number Adding directed numbers
Calculate: 9 + (-5)
Answer: 4 -
2. Algebra Two-step equations
Solve: 6x + 10 = 28
Answer: x = 3 -
3. Geometry Converting units of time
Convert 9 minutes to seconds
Answer: 540 seconds -
4. Ratio Writing a ratio as 1 : n
Write 5:20 in the form 1:n
Answer: 1:4 -
5. Statistics Range
Find the range of: 34, 15, 23, 28, 30
Answer: 19