Keystones — Bedrock
Five GCSE retrieval questions · 30 November 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 11 + 39
Answer: 11 + 39 = 50 -
2. Algebra Substitution
If x = 2, find the value of 5x + 7
Answer: 17 -
3. Geometry Converting lengths
Convert 9m to cm
Answer: 900cm -
4. Ratio Simplifying ratios
Simplify the ratio 25:40
Answer: 5:8 -
5. Statistics Mean
Find the mean of: 12, 4, 15, 25
Answer: 14