Keystones — Bedrock
Five GCSE retrieval questions · 7 September 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 82 + 89
Answer: 82 + 89 = 171 -
2. Algebra Substitution
If x = 6, find the value of 7x + 9
Answer: 51 -
3. Geometry Converting lengths
Convert 20cm to mm
Answer: 200mm -
4. Ratio Simplifying ratios
Simplify the ratio 8:20
Answer: 2:5 -
5. Statistics Mean
Find the mean of: 7, 8, 4, 6, 10
Answer: 7