Keystones — Bedrock
Five GCSE retrieval questions · 17 November 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 22 + 22
Answer: 22 + 22 = 44 -
2. Algebra Substitution
If x = 7, find the value of 6x + 9
Answer: 51 -
3. Geometry Converting lengths
Convert 4m to cm
Answer: 400cm -
4. Ratio Simplifying ratios
Simplify the ratio 40:25
Answer: 8:5 -
5. Statistics Mean
Find the mean of: 3, 5, 19, 18, 20
Answer: 13