Keystones — Bedrock
Five GCSE retrieval questions · 13 October 2026 · mathsvault.uk/keystones
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1. Number Multiplying and dividing by powers of ten
Calculate: 12 × 100
Answer: 1200 -
2. Algebra Generating sequence terms
Find the first 4 terms of: 3n + 9
Answer: 12, 15, 18, 21 -
3. Geometry Converting volume units
Convert 8 litres to ml
Answer: 8000ml -
4. Ratio Finding a share from another
A and B share in ratio 3:1. If A gets 147, how much does B get?
Answer: 49 -
5. Statistics Averages and range
Find the mean, median and range of: 26, 15, 19, 25, 33
Answer: Mean = 23.6, Median = 25, Range = 18