Keystones — Bedrock
Five GCSE retrieval questions · 5 July 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 45 + 31
Answer: 45 + 31 = 76 -
2. Algebra Substitution
If x = 4, find the value of 5x + 8
Answer: 28 -
3. Geometry Converting lengths
Convert 9cm to mm
Answer: 90mm -
4. Ratio Simplifying ratios
Simplify the ratio 28:20
Answer: 7:5 -
5. Statistics Mean
Find the mean of: 11, 13, 5, 12, 19
Answer: 12