Keystones — Bedrock
Five GCSE retrieval questions · 15 October 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 41 + 57
Answer: 41 + 57 = 98 -
2. Algebra Substitution
If x = 3, find the value of 5x + 10
Answer: 25 -
3. Geometry Converting lengths
Convert 13cm to mm
Answer: 130mm -
4. Ratio Simplifying ratios
Simplify the ratio 12:6
Answer: 2:1 -
5. Statistics Mean
Find the mean of: 15, 4, 2, 15, 9
Answer: 9