Keystones — Bedrock
Five GCSE retrieval questions · 16 May 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 30 + 21
Answer: 30 + 21 = 51 -
2. Algebra Substitution
If x = 5, find the value of 2x + 6
Answer: 16 -
3. Geometry Converting lengths
Convert 5cm to mm
Answer: 50mm -
4. Ratio Simplifying ratios
Simplify the ratio 25:30
Answer: 5:6 -
5. Statistics Mean
Find the mean of: 14, 2, 11, 6, 17
Answer: 10