Keystones — Bedrock
Five GCSE retrieval questions · 23 July 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 31 + 43
Answer: 31 + 43 = 74 -
2. Algebra Substitution
If x = 9, find the value of 8x + 10
Answer: 82 -
3. Geometry Converting lengths
Convert 28cm to mm
Answer: 280mm -
4. Ratio Simplifying ratios
Simplify the ratio 24:8
Answer: 3:1 -
5. Statistics Mean
Find the mean of: 19, 12, 15, 5, 9
Answer: 12