Keystones — Bedrock
Five GCSE retrieval questions · 18 August 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 23 + 28
Answer: 23 + 28 = 51 -
2. Algebra Substitution
If x = 4, find the value of 3x + 11
Answer: 23 -
3. Geometry Converting lengths
Convert 29cm to mm
Answer: 290mm -
4. Ratio Simplifying ratios
Simplify the ratio 21:6
Answer: 7:2 -
5. Statistics Mean
Find the mean of: 7, 25, 4
Answer: 12