Keystones — Bedrock
Five GCSE retrieval questions · 24 October 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 33 + 38
Answer: 33 + 38 = 71 -
2. Algebra Substitution
If x = 2, find the value of 4x + 12
Answer: 20 -
3. Geometry Converting lengths
Convert 23cm to mm
Answer: 230mm -
4. Ratio Simplifying ratios
Simplify the ratio 24:12
Answer: 2:1 -
5. Statistics Mean
Find the mean of: 12, 19, 15, 15, 4
Answer: 13