Keystones — Bedrock
Five GCSE retrieval questions · 12 February 2026 · mathsvault.uk/keystones
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1. Number Multiplying and dividing by powers of ten
Calculate: 82 × 100
Answer: 8200 -
2. Algebra Generating sequence terms
Find the first 4 terms of: 3n + 6
Answer: 9, 12, 15, 18 -
3. Geometry Converting volume units
Convert 10 litres to ml
Answer: 10000ml -
4. Ratio Finding a share from another
A and B share in ratio 1:4. If A gets 40, how much does B get?
Answer: 160 -
5. Statistics Averages and range
Find the mean, median and range of: 21, 15, 31, 26, 19
Answer: Mean = 22.4, Median = 21, Range = 16