Keystones — Bedrock
Five GCSE retrieval questions · 9 December 2013 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 24 + 30
Answer: 24 + 30 = 54 -
2. Algebra Substitution
If x = 9, find the value of 3x + 11
Answer: 38 -
3. Geometry Converting lengths
Convert 23cm to mm
Answer: 230mm -
4. Ratio Simplifying ratios
Simplify the ratio 40:30
Answer: 4:3 -
5. Statistics Mean
Find the mean of: 14, 10, 7, 9, 10
Answer: 10