Keystones — Bedrock
Five GCSE retrieval questions · 14 August 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 21 + 17
Answer: 21 + 17 = 38 -
2. Algebra Substitution
If x = 7, find the value of 6x + 8
Answer: 50 -
3. Geometry Converting lengths
Convert 18cm to mm
Answer: 180mm -
4. Ratio Simplifying ratios
Simplify the ratio 20:25
Answer: 4:5 -
5. Statistics Mean
Find the mean of: 19, 7, 7, 14, 13
Answer: 12