Keystones — Bedrock
Five GCSE retrieval questions · 18 May 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 57 + 35
Answer: 57 + 35 = 92 -
2. Algebra Substitution
If x = 5, find the value of 2x + 10
Answer: 20 -
3. Geometry Converting lengths
Convert 4m to cm
Answer: 400cm -
4. Ratio Simplifying ratios
Simplify the ratio 20:25
Answer: 4:5 -
5. Statistics Mean
Find the mean of: 15, 19, 9, 5
Answer: 12