Keystones — Bedrock
Five GCSE retrieval questions · 20 October 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 30 + 78
Answer: 30 + 78 = 108 -
2. Algebra Substitution
If x = 3, find the value of 5x + 11
Answer: 26 -
3. Geometry Converting lengths
Convert 17cm to mm
Answer: 170mm -
4. Ratio Simplifying ratios
Simplify the ratio 12:6
Answer: 2:1 -
5. Statistics Mean
Find the mean of: 3, 10, 2
Answer: 5