Keystones — Bedrock
Five GCSE retrieval questions · 1 April 2026 · mathsvault.uk/keystones
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1. Number Multiplying and dividing by powers of ten
Calculate: 15 × 1000
Answer: 15000 -
2. Algebra Generating sequence terms
Find the first 4 terms of: 3n + 3
Answer: 6, 9, 12, 15 -
3. Geometry Converting volume units
Convert 2 litres to ml
Answer: 2000ml -
4. Ratio Finding a share from another
A and B share in ratio 2:1. If A gets 76, how much does B get?
Answer: 38 -
5. Statistics Averages and range
Find the mean, median and range of: 23, 11, 36, 20, 28
Answer: Mean = 23.6, Median = 23, Range = 25