Keystones — Bedrock
Five GCSE retrieval questions · 28 October 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 32 + 49
Answer: 32 + 49 = 81 -
2. Algebra Substitution
If x = 10, find the value of 3x + 9
Answer: 39 -
3. Geometry Converting lengths
Convert 27cm to mm
Answer: 270mm -
4. Ratio Simplifying ratios
Simplify the ratio 10:40
Answer: 1:4 -
5. Statistics Mean
Find the mean of: 9, 20, 6, 17
Answer: 13