Keystones — Bedrock
Five GCSE retrieval questions · 12 October 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 13 + 17
Answer: 13 + 17 = 30 -
2. Algebra Substitution
If x = 5, find the value of 2x + 12
Answer: 22 -
3. Geometry Converting lengths
Convert 43cm to mm
Answer: 430mm -
4. Ratio Simplifying ratios
Simplify the ratio 25:20
Answer: 5:4 -
5. Statistics Mean
Find the mean of: 3, 19, 6, 5, 7
Answer: 8