Keystones — Bedrock
Five GCSE retrieval questions · 6 January 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 80 + 20
Answer: 80 + 20 = 100 -
2. Algebra Substitution
If x = 5, find the value of 3x + 7
Answer: 22 -
3. Geometry Converting lengths
Convert 4m to cm
Answer: 400cm -
4. Ratio Simplifying ratios
Simplify the ratio 16:20
Answer: 4:5 -
5. Statistics Mean
Find the mean of: 2, 12, 13, 14, 9
Answer: 10