Keystones — Bedrock
Five GCSE retrieval questions · 24 August 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 45 + 84
Answer: 45 + 84 = 129 -
2. Algebra Substitution
If x = 7, find the value of 2x + 3
Answer: 17 -
3. Geometry Converting lengths
Convert 42cm to mm
Answer: 420mm -
4. Ratio Simplifying ratios
Simplify the ratio 21:24
Answer: 7:8 -
5. Statistics Mean
Find the mean of: 10, 4, 19, 14, 18
Answer: 13