Keystones — Bedrock
Five GCSE retrieval questions · 28 September 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 47 + 10
Answer: 47 + 10 = 57 -
2. Algebra Substitution
If x = 4, find the value of 5x + 8
Answer: 28 -
3. Geometry Converting lengths
Convert 13m to cm
Answer: 1300cm -
4. Ratio Simplifying ratios
Simplify the ratio 21:12
Answer: 7:4 -
5. Statistics Mean
Find the mean of: 8, 12, 20, 18, 7
Answer: 13