Keystones — Bedrock
Five GCSE retrieval questions · 18 July 2013 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 31 + 30
Answer: 31 + 30 = 61 -
2. Algebra Substitution
If x = 7, find the value of 5x + 10
Answer: 45 -
3. Geometry Converting lengths
Convert 28cm to mm
Answer: 280mm -
4. Ratio Simplifying ratios
Simplify the ratio 6:21
Answer: 2:7 -
5. Statistics Mean
Find the mean of: 11, 6, 15, 18, 10
Answer: 12