Keystones — Bedrock
Five GCSE retrieval questions · 23 January 2013 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 25 + 20
Answer: 25 + 20 = 45 -
2. Algebra Substitution
If x = 9, find the value of 4x + 7
Answer: 43 -
3. Geometry Converting lengths
Convert 19cm to mm
Answer: 190mm -
4. Ratio Simplifying ratios
Simplify the ratio 24:12
Answer: 2:1 -
5. Statistics Mean
Find the mean of: 9, 8, 8, 19
Answer: 11