Keystones — Bedrock
Five GCSE retrieval questions · 4 January 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 83 + 44
Answer: 83 + 44 = 127 -
2. Algebra Substitution
If x = 9, find the value of 2x + 4
Answer: 22 -
3. Geometry Converting lengths
Convert 21cm to mm
Answer: 210mm -
4. Ratio Simplifying ratios
Simplify the ratio 21:6
Answer: 7:2 -
5. Statistics Mean
Find the mean of: 10, 20, 9
Answer: 13