Keystones — Bedrock
Five GCSE retrieval questions · 5 August 2010 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 75 + 97
Answer: 75 + 97 = 172 -
2. Algebra Substitution
If x = 9, find the value of 3x + 7
Answer: 34 -
3. Geometry Converting lengths
Convert 38cm to mm
Answer: 380mm -
4. Ratio Simplifying ratios
Simplify the ratio 15:40
Answer: 3:8 -
5. Statistics Mean
Find the mean of: 2, 23, 16, 19, 15
Answer: 15