Keystones — Bedrock
Five GCSE retrieval questions · 15 May 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 21 + 36
Answer: 21 + 36 = 57 -
2. Algebra Substitution
If x = 9, find the value of 5x + 4
Answer: 49 -
3. Geometry Converting lengths
Convert 27cm to mm
Answer: 270mm -
4. Ratio Simplifying ratios
Simplify the ratio 10:35
Answer: 2:7 -
5. Statistics Mean
Find the mean of: 12, 20, 17, 3
Answer: 13