Keystones — Bedrock
Five GCSE retrieval questions · 27 January 2011 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 66 + 89
Answer: 66 + 89 = 155 -
2. Algebra Substitution
If x = 7, find the value of 6x + 5
Answer: 47 -
3. Geometry Converting lengths
Convert 47cm to mm
Answer: 470mm -
4. Ratio Simplifying ratios
Simplify the ratio 15:20
Answer: 3:4 -
5. Statistics Mean
Find the mean of: 3, 6, 24, 19
Answer: 13