Keystones — Bedrock
Five GCSE retrieval questions · 9 February 2026 · mathsvault.uk/keystones
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1. Number Multiplying and dividing by powers of ten
Calculate: 31 × 1000
Answer: 31000 -
2. Algebra Generating sequence terms
Find the first 4 terms of: 4n + 1
Answer: 5, 9, 13, 17 -
3. Geometry Converting volume units
Convert 3 litres to ml
Answer: 3000ml -
4. Ratio Finding a share from another
A and B share in ratio 3:4. If A gets 90, how much does B get?
Answer: 120 -
5. Statistics Averages and range
Find the mean, median and range of: 35, 21, 38, 22, 17
Answer: Mean = 26.6, Median = 22, Range = 21