Keystones — Bedrock
Five GCSE retrieval questions · 28 March 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 23 + 30
Answer: 23 + 30 = 53 -
2. Algebra Substitution
If x = 5, find the value of 4x + 5
Answer: 25 -
3. Geometry Converting lengths
Convert 24cm to mm
Answer: 240mm -
4. Ratio Simplifying ratios
Simplify the ratio 32:8
Answer: 4:1 -
5. Statistics Mean
Find the mean of: 5, 5, 25, 17
Answer: 13