Keystones — Bedrock
Five GCSE retrieval questions · 23 February 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 15 + 17
Answer: 15 + 17 = 32 -
2. Algebra Substitution
If x = 7, find the value of 8x + 5
Answer: 61 -
3. Geometry Converting lengths
Convert 43cm to mm
Answer: 430mm -
4. Ratio Simplifying ratios
Simplify the ratio 6:15
Answer: 2:5 -
5. Statistics Mean
Find the mean of: 5, 17, 17
Answer: 13