Keystones — Bedrock
Five GCSE retrieval questions · 9 May 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 28 + 84
Answer: 28 + 84 = 112 -
2. Algebra Substitution
If x = 7, find the value of 5x + 5
Answer: 40 -
3. Geometry Converting lengths
Convert 12m to cm
Answer: 1200cm -
4. Ratio Simplifying ratios
Simplify the ratio 9:15
Answer: 3:5 -
5. Statistics Mean
Find the mean of: 7, 13, 21, 7, 17
Answer: 13