Keystones — Bedrock
Five GCSE retrieval questions · 6 February 2021 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 80 + 82
Answer: 80 + 82 = 162 -
2. Algebra Substitution
If x = 9, find the value of 4x + 9
Answer: 45 -
3. Geometry Converting lengths
Convert 25cm to mm
Answer: 250mm -
4. Ratio Simplifying ratios
Simplify the ratio 21:9
Answer: 7:3 -
5. Statistics Mean
Find the mean of: 14, 18, 12, 12
Answer: 14