Keystones — Bedrock
Five GCSE retrieval questions · 5 April 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 30 + 41
Answer: 30 + 41 = 71 -
2. Algebra Substitution
If x = 9, find the value of 8x + 8
Answer: 80 -
3. Geometry Converting lengths
Convert 11cm to mm
Answer: 110mm -
4. Ratio Simplifying ratios
Simplify the ratio 10:35
Answer: 2:7 -
5. Statistics Mean
Find the mean of: 20, 10, 9
Answer: 13