Keystones — Bedrock
Five GCSE retrieval questions · 17 March 2026 · mathsvault.uk/keystones
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1. Number Adding directed numbers
Calculate: -8 + (-10)
Answer: -18 -
2. Algebra Two-step equations
Solve: 3x + 12 = 45
Answer: x = 11 -
3. Geometry Converting units of time
Convert 4 minutes to seconds
Answer: 240 seconds -
4. Ratio Writing a ratio as 1 : n
Write 3:12 in the form 1:n
Answer: 1:4 -
5. Statistics Range
Find the range of: 24, 14, 20, 14, 16
Answer: 10