Keystones — Bedrock
Five GCSE retrieval questions · 18 June 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 72 + 83
Answer: 72 + 83 = 155 -
2. Algebra Substitution
If x = 10, find the value of 2x + 4
Answer: 24 -
3. Geometry Converting lengths
Convert 42cm to mm
Answer: 420mm -
4. Ratio Simplifying ratios
Simplify the ratio 4:10
Answer: 2:5 -
5. Statistics Mean
Find the mean of: 13, 24, 9, 4, 15
Answer: 13