Keystones — Bedrock
Five GCSE retrieval questions · 11 August 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 31 + 47
Answer: 31 + 47 = 78 -
2. Algebra Substitution
If x = 10, find the value of 5x + 7
Answer: 57 -
3. Geometry Converting lengths
Convert 9cm to mm
Answer: 90mm -
4. Ratio Simplifying ratios
Simplify the ratio 8:4
Answer: 2:1 -
5. Statistics Mean
Find the mean of: 14, 8, 19, 5, 19
Answer: 13