Keystones — Bedrock
Five GCSE retrieval questions · 19 February 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 20 + 49
Answer: 20 + 49 = 69 -
2. Algebra Substitution
If x = 5, find the value of 7x + 7
Answer: 42 -
3. Geometry Converting lengths
Convert 5cm to mm
Answer: 50mm -
4. Ratio Simplifying ratios
Simplify the ratio 30:10
Answer: 3:1 -
5. Statistics Mean
Find the mean of: 14, 19, 6
Answer: 13