Keystones — Bedrock
Five GCSE retrieval questions · 22 October 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 21 + 47
Answer: 21 + 47 = 68 -
2. Algebra Substitution
If x = 8, find the value of 5x + 6
Answer: 46 -
3. Geometry Converting lengths
Convert 4m to cm
Answer: 400cm -
4. Ratio Simplifying ratios
Simplify the ratio 12:15
Answer: 4:5 -
5. Statistics Mean
Find the mean of: 4, 12, 15, 12, 17
Answer: 12