Keystones — Bedrock
Five GCSE retrieval questions · 6 April 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 83 + 42
Answer: 83 + 42 = 125 -
2. Algebra Substitution
If x = 2, find the value of 3x + 12
Answer: 18 -
3. Geometry Converting lengths
Convert 9cm to mm
Answer: 90mm -
4. Ratio Simplifying ratios
Simplify the ratio 24:16
Answer: 3:2 -
5. Statistics Mean
Find the mean of: 4, 20, 17, 13, 16
Answer: 14