Keystones — Bedrock
Five GCSE retrieval questions · 15 November 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 22 + 45
Answer: 22 + 45 = 67 -
2. Algebra Substitution
If x = 4, find the value of 4x + 12
Answer: 28 -
3. Geometry Converting lengths
Convert 10cm to mm
Answer: 100mm -
4. Ratio Simplifying ratios
Simplify the ratio 25:40
Answer: 5:8 -
5. Statistics Mean
Find the mean of: 8, 21, 2, 17
Answer: 12