Keystones — Bedrock
Five GCSE retrieval questions · 2 October 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 18 + 28
Answer: 18 + 28 = 46 -
2. Algebra Substitution
If x = 2, find the value of 2x + 6
Answer: 10 -
3. Geometry Converting lengths
Convert 20cm to mm
Answer: 200mm -
4. Ratio Simplifying ratios
Simplify the ratio 16:24
Answer: 2:3 -
5. Statistics Mean
Find the mean of: 9, 9, 4, 17, 6
Answer: 9