Keystones — Bedrock
Five GCSE retrieval questions · 24 April 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 45 + 47
Answer: 45 + 47 = 92 -
2. Algebra Substitution
If x = 6, find the value of 3x + 11
Answer: 29 -
3. Geometry Converting lengths
Convert 20cm to mm
Answer: 200mm -
4. Ratio Simplifying ratios
Simplify the ratio 40:25
Answer: 8:5 -
5. Statistics Mean
Find the mean of: 19, 5, 18, 13, 10
Answer: 13