Keystones — Bedrock
Five GCSE retrieval questions · 2 June 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 39 + 48
Answer: 39 + 48 = 87 -
2. Algebra Substitution
If x = 7, find the value of 2x + 4
Answer: 18 -
3. Geometry Converting lengths
Convert 4m to cm
Answer: 400cm -
4. Ratio Simplifying ratios
Simplify the ratio 18:21
Answer: 6:7 -
5. Statistics Mean
Find the mean of: 7, 2, 20, 15
Answer: 11