Keystones — Bedrock
Five GCSE retrieval questions · 1 July 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 85 + 50
Answer: 85 + 50 = 135 -
2. Algebra Substitution
If x = 9, find the value of 3x + 11
Answer: 38 -
3. Geometry Converting lengths
Convert 20m to cm
Answer: 2000cm -
4. Ratio Simplifying ratios
Simplify the ratio 35:15
Answer: 7:3 -
5. Statistics Mean
Find the mean of: 18, 19, 10, 24, 4
Answer: 15