Keystones — Bedrock
Five GCSE retrieval questions · 30 November 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 22 + 18
Answer: 22 + 18 = 40 -
2. Algebra Substitution
If x = 6, find the value of 3x + 7
Answer: 25 -
3. Geometry Converting lengths
Convert 8m to cm
Answer: 800cm -
4. Ratio Simplifying ratios
Simplify the ratio 18:9
Answer: 2:1 -
5. Statistics Mean
Find the mean of: 10, 9, 23, 9, 14
Answer: 13