Keystones — Bedrock
Five GCSE retrieval questions · 9 December 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 45 + 30
Answer: 45 + 30 = 75 -
2. Algebra Substitution
If x = 4, find the value of 5x + 6
Answer: 26 -
3. Geometry Converting lengths
Convert 18m to cm
Answer: 1800cm -
4. Ratio Simplifying ratios
Simplify the ratio 12:21
Answer: 4:7 -
5. Statistics Mean
Find the mean of: 12, 19, 14
Answer: 15