Keystones — Bedrock
Five GCSE retrieval questions · 2 January 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 18 + 33
Answer: 18 + 33 = 51 -
2. Algebra Substitution
If x = 5, find the value of 2x + 12
Answer: 22 -
3. Geometry Converting lengths
Convert 3m to cm
Answer: 300cm -
4. Ratio Simplifying ratios
Simplify the ratio 16:8
Answer: 2:1 -
5. Statistics Mean
Find the mean of: 10, 10, 7, 25
Answer: 13