Keystones — Bedrock
Five GCSE retrieval questions · 19 August 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 85 + 83
Answer: 85 + 83 = 168 -
2. Algebra Substitution
If x = 8, find the value of 5x + 10
Answer: 50 -
3. Geometry Converting lengths
Convert 8m to cm
Answer: 800cm -
4. Ratio Simplifying ratios
Simplify the ratio 15:9
Answer: 5:3 -
5. Statistics Mean
Find the mean of: 10, 4, 7, 19
Answer: 10