Keystones — Bedrock
Five GCSE retrieval questions · 20 June 2013 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 45 + 39
Answer: 45 + 39 = 84 -
2. Algebra Substitution
If x = 4, find the value of 2x + 7
Answer: 15 -
3. Geometry Converting lengths
Convert 20m to cm
Answer: 2000cm -
4. Ratio Simplifying ratios
Simplify the ratio 21:6
Answer: 7:2 -
5. Statistics Mean
Find the mean of: 10, 18, 8
Answer: 12