Keystones — Bedrock
Five GCSE retrieval questions · 21 July 2012 · mathsvault.uk/keystones
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1. Number Adding whole numbers
Calculate: 25 + 46
Answer: 25 + 46 = 71 -
2. Algebra Substitution
If x = 5, find the value of 3x + 9
Answer: 24 -
3. Geometry Converting lengths
Convert 38cm to mm
Answer: 380mm -
4. Ratio Simplifying ratios
Simplify the ratio 8:24
Answer: 1:3 -
5. Statistics Mean
Find the mean of: 18, 5, 19
Answer: 14