Keystones — Bedrock
Five GCSE retrieval questions · 3 September 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 45 + 21
Answer: 45 + 21 = 66 -
2. Algebra Substitution
If x = 7, find the value of 2x + 8
Answer: 22 -
3. Geometry Converting lengths
Convert 9cm to mm
Answer: 90mm -
4. Ratio Simplifying ratios
Simplify the ratio 9:21
Answer: 3:7 -
5. Statistics Mean
Find the mean of: 11, 10, 5, 2
Answer: 7