Keystones — Bedrock
Five GCSE retrieval questions · 23 June 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 27 + 30
Answer: 27 + 30 = 57 -
2. Algebra Substitution
If x = 7, find the value of 2x + 9
Answer: 23 -
3. Geometry Converting lengths
Convert 8cm to mm
Answer: 80mm -
4. Ratio Simplifying ratios
Simplify the ratio 25:15
Answer: 5:3 -
5. Statistics Mean
Find the mean of: 14, 7, 7, 4
Answer: 8